American Idol (8pm, Fox) - Scotty, James, Lauren, and Haley perform the tunes of the influential 1950s songwriting duo Jerry Leiber and Mike Stoller. They wrote songs that became hits for Elvis Presley, The Coasters, The Drifters, and Ben E. King. Kudos to 'Idol' for recognizing their significant contribution to rock and roll, but really? Also, Lady Gaga is the guest mentor (apparently Doris Day was busy).
Better With You (8:30pm, ABC) - In the Season 1 finale, Mia goes into labor and suddenly decides she and Casey should be married when the baby is born. Cue scramble.
Modern Family (9pm, ABC) - Phil and Claire reverse their respective "good cop, bad cop" roles and throw the kids for a loop. Also, Cameron comes down with the flu and Mitchell's plans to attend a Lady Gaga concert are threatened.
Happy Endings (10pm, ABC) - Two back-to-back new episodes again this week. This show is really funny and I won't stop harping on it till you watch. I already let your complacency cost me "Perfect Couples." In the first episode, Dave and Alex must decide what to do about the his-and-her tattoos they got when they were a couple. In the second episode, Penny dates a teacher Dave admires and discovers he's not as wonderful as everyone thinks.
Top Chef Masters (10pm, Bravo) - The cooks must become judges and appraise the quick fire work of their fellow chefs. Later they cook for the rock band Maroon 5.
Law & Order: SVU (10pm, NBC) - A woman discovers an unknown naked teenage boy asleep in her bedroom and the boy's overprotective mother (Rita Wilson) defends her son's devious actions. When police investigate, they are reminded of how misleading appearances can be.