••Alan Alda (“M*A*S*H”) on “30 Rock,” 8:31 p.m. Thursday on NBC.
••David Archuleta (”American Idol”) on “Hannah Montana,” 7 p.m. Sunday on Disney.
••Daniel Baldwin (”Grey Gardens”) on “Cold Case,” 8 p.m. Sunday on CBS.
••Nicholas Brendon (‘‘Buffy the Vampire Slayer”) on “Criminal Minds,” 8 p.m. Wednesday on CBS.
••Steve Buscemi (“Fargo”) on “30 Rock,” 8:31 p.m. Thursday on NBC.
••Lauren Conrad (”The Hills”) on “Family Guy,” 8 p.m. Sunday on Fox.
••Marika Dominczyk (wife of series star Scott Foley) on “The Unit,” 9 p.m. Sunday on CBS.
••Charles S. Dutton (”Roc”) on “CSI: NY,” 9 p.m. Wednesday on CBS.
••Jimmy Fallon (”Late Night With Jimmy Fallon”) on “Family Guy,” 8 p.m. Sunday on Fox.
••Craig Ferguson (”Late Late Show With Craig Ferguson”) on “Family Guy,” 8 p.m. Sunday on Fox.
••Jennifer Finnegan (”Close to Home”) on “Head Case,” 9 p.m. Friday on Starz.••Sprague Grayden (”Joan of Arcadia”) on “CSI: Miami,” 9 p.m. Monday on CBS.
••Adhir Kalyan (‘‘Aliens in America”) on “Rules of Engagement,” 8:31 p.m. Monday on CBS.
••Swoosie Kurtz (”Pushing Daisies”) on “Law & Order: Special Victims Unit,” 9 p.m. Tuesday on NBC.
••LL Cool J (”In the House”) on “NCIS,” 7 p.m. Tuesday on CBS.
••Jay Leno (”The Tonight Show”) on “Family Guy,” 8 p.m. Sunday on Fox.
••Seth MacFarlane (”Family Guy”) on “Bones,” 7 p.m. Thursday on Fox.
••David Morse (”John Adams”) on “Medium,” 8 p.m. Monday on NBC.
••Chris O’Donnell (”Grey’s Anatomy”) on “NCIS,” 7 p.m. Tuesday on CBS.
••Joe Penny (”Jake and the Fatman”) on “Cold Case,” 8 p.m. Sunday on CBS.
••Mekhi Phifer (”ER”) on “Lie to Me,” 7 p.m. Wednesday on Fox.
••Jesse Plemons (”Friday Night Lights”) on “Cold Case,” 8 p.m. Sunday on CBS.
••Tracy Pollan (”Natalee Holloway”) on “Medium,” 8 p.m. Monday on NBC.
••Colin L. Powell (former Secretary of State) on “Extreme Makeover: Home Edition,” 7 p.m. Sunday on ABC.
••Rob Riggle (”The Daily Show With Jon Stewart”) on “Gary Unmarried,” 7:30 p.m. Wednesday on CBS.
••Geraldo Rivera (”Geraldo at Large”) on “My Name is Earl,” 7 p.m. Thursday on NBC.
••Jonathon Silverman (”In Case of Emergency”) on “Head Case,” 9 p.m. Friday on Starz.
••Tom Skerritt (”Picket Fences”) on “Brothers & Sisters,” 9:01 p.m. Sunday on ABC.
••Lee Tergesen (”Oz”) on “The New Adventures of Old Christine,” 7 p.m. Wednesday on CBS.
••Tiffani Thiessen (”Good Morning, Miami”) on “Head Case,” 9 p.m. Friday on Starz.
••Alexa Vega (”Spy Kids”) on “Ghost Whisperer,” 7 p.m. Friday on CBS.
••Steven Weber (”Wings”) on “Party Down,” 9:30 p.m. Friday on Starz.
••Henry Winkler (”Happy Days”) on “NUMB3RS,” 9 p.m. Friday on CBS.
••Mare Winningham (”St. Elmo’s Fire”) on “CSI: NY,” 9 p.m. Wednesday on CBS.
••Collette Wolfe (”17 Again”) on “Greek,” 7 p.m. Monday on ABC Family.
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Aqui 19:00
