Monday, May 12

Bones (FOX, 8 p.m.) - In real life, the sisters Deschanel are lovely singers, but Brennan doesn't do so well at an open-mic night featuring American Idol guest stars Ace Young and Brandon Rogers.

Gossip Girl (The CW, 8 p.m.) - The twisted love triangle - aka Blair, Chuck and Nate - come together to help Serena, who is back to her old ways.

How I Met Your Mother (CBS, 8:30 p.m.) - Britney Spears returns as Abby, and she's teaming with Barney to make Ted jealous.

House (FOX, 9 p.m.) - How you know it's sweeps: House suffers from weird visions after waking from a bus accident in this first part of a two-hour finale.

Samantha Who? (ABC, 9:32 p.m.) - Hopefully, Todd finally puts the kibosh on his relationship with Chloe in tonight's season finale.

Medium (NBC, 10 p.m.) - This is why Joe is tied for best husband with Coach Taylor. Meghan (Kelly Preston) comes on to him, and he doesn't even falter for a second. But that doesn't mean tonight's season finale will be smooth sailing when Meghan reveals her true intentions.

Tuesday, May 13

American Idol (FOX, 8 p.m.) - The final 3 take the stage.

Reaper (The CW, 9 p.m.) - Slippery little demon! Richard Burgi (Susan's ex-husband on Desperate Housewives) is a fugitive soul who keeps managing to escape from hell.

Wednesday, May 14

America's Next Top Model (The CW, 8 p.m.) - One of the three remaining girls is crowned America's Not So Top Model.

American Idol (FOX, 9 p.m.) - There were three, but after tonight, only two will continue to the finale.

Thursday, May 15

Smallville (The CW, 8 p.m.) - Last chance to see Lex, Lana and possibly Chloe before they all depart from the mothership.

The Office (NBC, 9 p.m.) - Seeing as how The Office set was on lockdown during the filming of tonight's season ender, we're expecting big things in addition to Toby's farewell party.

Grey's Anatomy (ABC, 9 p.m.) - We don't know what's up with Rebecca, but we can't wait to find out the truth tonight along with Alex.

Supernatural (The CW, 9 p.m.) - Dean, Sam and Bobby race to save Dean from eternal damnation, stealing Ruby's knife in the process. We're predicting a killer season-ending cliffhanger, so brace yourselves.

Lost (ABC, 10 p.m.) - Part one of a three hour finale begins tonight with the survivors facing off against the freighter folks.

Without A Trace (CBS, 10 p.m.) - It's the season finale, so Sam's bun in the oven seems to be done cooking.

Friday, May 16

Moonlight (CBS, 9 p.m.) - Mick, Josef and the other local vamps meet up for a secret rendezvous in tonight's season finale when a murder investigation threatens to expose them all. Think of it as the vampire mafia.

Man vs. Wild (Discovery, 9 p.m.) - Bear finds himself on an island off the coast of Indonesia, which was devastated by the 2004 tsunami.

The Soup (E!, 10 p.m.) - In a week that contains the Top Model finale, The Soup is bound to be plentiful.

Saturday, May 17

Day of rest. Take a breather. Go outside.

Sunday, May 18

The Office (NBC, 8-10 p.m.) - The peacock net reruns two hour-long episodes, "The Launch" and "Money."

Aliens in America (The CW, 8:30 p.m.) - The season's best new comedy airs what looks like its last episode as Raja's crush on a Muslim girl inspires Franny to get the two families together.

Desperate Housewives (ABC, 9 p.m.) - It's a two-hour finale, but bets are Katherine's secrets will be revealed in the last five minutes as Mary Alice talks all over them.

Story by Vlada Gelman contributing writer