Ending several months of speculation, The Paley Center for Media has today announced the full lineup for PaleyFest09, the 26th Annual William S. Paley Television Festival.

Among the honorees this year are the casts and creators of 90210, Battlestar Galactica and Caprica, The Big Bang Theory, Big Love, Desperate Housewives, Dollhouse, Dr. Horrible’s Sing-Along Blog, Fringe, The Hills, It’s Always Sunny in Philadelphia, The Mentalist, Swingtown, and True Blood.

PaleyFest09 will be held from April 10th to April 23rd at the Cinerama Dome at the ArcLight Cinemas in Hollywood; the Paley Center will also present a special closing night presentation honoring Swingtown at The Paley Center for Media in Beverly Hills on April 24.

Other festival firsts this year? PaleyFest09 will be the festival event to honor a new media property, in this case Joss Whedon's celebrated web series Dr. Horrible’s Sing-Along Blog, and will be the first to premiere the last three unseen episodes of ABC's sadly cancelled series Pushing Daisies.

“For twenty-six years, we have celebrated the best of television, and now new media, with the creative teams who make the breakthrough programs. This interaction between the creative community and media enthusiasts has made this annual Festival a 'Must Be There' event,” said Pat Mitchell, President/CEO of The Paley Center for Media.

The full PaleyFest09 schedule can be found below but, as always, please note that events/participants are subject to change.

It’s Always Sunny in Philadephia
Friday, April 10 at 7:00 p.m.
In Person: Danny DeVito (“Frank Reynolds”), Glenn Howerton (“Dennis Reynolds”/Executive Producer/Writer), Rob McElhenney (“Mac”/Creator/Executive Producer/Writer/Director), Kaitlin Olson (“Sweet Dee”). Additional panelists to be announced.

90210
Saturday, April 11 at 7:00 p.m.
In Person: Panelists from the cast and creative team to be announced.

True Blood
Monday, April 13 at 7:00 p.m.
In Person: Alan Ball (Creator/Executive Producer), Ryan Kwanten (“Jason Stackhouse”), Steven Moyer (“Bill Compton”), Anna Paquin (“Sookie Stackhouse”), Sam Trammell (“Sam Merlotte”), Rutina Wessley (“Tara Thorton”). Additional panelists to be announced.

Dr. Horrible’s Sing-Along Blog
Tuesday, April 14 at 7:00 p.m.
In Person: Felicia Day (“Penny”), Nathan Fillion (“Captain Hammer”), Jed Whedon (“Bad Horse Chorus #2/Dead Bowie”/Composer/Writer), Joss Whedon (Creator/Executive Producer/Writer/Director), Zack Whedon (Executive Producer/Writer).

Dollhouse
Wednesday, April 15 at 7:00 p.m.
In Person: Joss Whedon (Creator/Executive Producer/Writer/Director), Eliza Dushku (“Echo”), Enver Gjoka (“Victor”), Fran Kranz (“Topher”), Dichen Lachman (“Sierra”), Harry Lennix (“Boyd”), Tahmoh Penikett (“Paul”), Olivia Williams (“Adelle”).

The Big Bang Theory
Thursday, April 16 at 7:00 p.m.
In Person: Kaley Cuoko (“Penny”), Johnny Galecki (Leonard), Jim Parsons (“Sheldon”). Additional panelists to be announced.

The Mentalist
Friday, April 17 at 7:00 p.m.
In Person: Simon Baker (“Patrick Jane”), Bruno Heller (Creator /Executive Producer) Tim Kang (“Kimball Cho”), Chris Long (Coexecutive Producer/Director), Amanda Righetti (“Grace Van Pelt”), Robin Tunney (“Teresa Lisbon”), Owain Yeoman (“Wayne Rigsby”). Additional panelists to be announced.

Desperate Housewives
Saturday, April 18 at 7:00 p.m.
In Person: Panelists from the cast and creative team to be announced.

PaleyFest09 Special Matinee Screening Event: Pushing Daisies’ Last Unaired Episodes
Sunday, April 19 at 1:00 p.m.
Introduction by Bryan Fuller (Creator/Executive Producer).

Battlestar Galactica/Caprica
Evening Sponsor: Microsoft Zune
Monday, April 20 at 7:00 p.m.
In Person: David Eick (Executive Producer), Ronald D. Moore (Executive Producer). Additional panelists to be announced.

The Hills
Tuesday, April 21 at 7:00 p.m.
In Person: Tony DiSanto (Executive Producer), Adam DiVello (Creator/Executive Producer), Liz Gateley (Executive Producer), Heidi Montag, Audrina Patridge, Spencer Pratt. Additional panelists to be announced.

Big Love
Wednesday, April 22 at 7:00 p.m.
In Person: Ginnifer Goodwin (“Margene Heffman”), Bill Paxton (“Bill Henrickson”), Chloe Sevigny (“Nicolette Grant”), Harry Dean Stanton (“Roman Grant”), Jeanne Tripplehorn (“Barbara Dutton Henrickson”). Additional panelists to be announced.

Fringe
Thursday, April 23 at 7:00 p.m.
In Person: Joshua Jackson (“Peter Bishop”), John Noble (“Dr. Walter Bishop”), Lance Reddick (“Homeland Security Agent Phillip Broyles”), Anna Torv (“Special Agent Olivia Dunham”). Additional panelists to be announced.

Swingtown Celebration
Evening Sponsor: Netflix, Inc.
*Friday, April 24 at 6:00 p.m. at The Paley Center for Media in Beverly Hills*
Festival Closing Reception & Panel Discussion
In Person: Mike Kelley (Creator/Executive Producer), Alan Poul (Executive Producer). Additional panelists to be announced.

Tickets to PaleyFest09 will go on sale February 26th to Paley Center members and the general public beginning March 1st.

So who's in this year? And what panels are you hoping to see? Discuss.