Tonight on TV

Big Brother 6 (7 p.m., Ch. 2): Still stuck in that house.

Joey (7 p.m., Ch. 5): Joey hires a personal assistant. (Repeat)

X Games (7 p.m., ESPN): Highlights from the four-day gravity-defying festival in Los Angeles.

Will & Grace (7:30 p.m., Ch. 5): Karen wants Will to fire a pastry chef. (Repeat)

CSI (8 p.m., Ch. 2): A model at an auto show is murdered. (Repeat)

Hooking Up (8 p.m., Ch. 4): Twenty-eight-year-old Amy sees another relationship coming to an end.

Law Firm (8 p.m., Ch. 5): Cases in the second episode of this reality series involve a dominatrix and a poster of questionable taste.

ER (8:59 p.m., Ch. 5): Neela writes to Gallant. (Repeat)

Without a Trace (9 p.m., Ch. 2): A real-estate agent is missing. (Repeat)

Kept (10 p.m., VH1): Jerry Hall finally gets her man.

It's Always Sunny in Philadelphia (11:30 p.m., FX): Four friends run a dive bar in this off-color comedy.