Today on TV

Survivor: Guatemala (7 p.m., Ch. 2): There's an individual immunity challenge and two tribal councils.

Alias (7 p.m., Ch. 4): Sydney's life is in danger when Gordon Dean discovers that Rachel — a k a Mockingbird — is still alive.

Joey (7 p.m., Ch. 5): Joey enrolls in an English-as-a-second-language course to get close to a woman.

Everybody Hates Chris (7 p.m., Ch. 24): Chris lets somebody else ride his new bike. Big mistake.

Smallville (7 p.m., Ch. 30): Aquaman saves Lois from drowning. Really. And Professor Fine tells Clark that Lex is behind a covert operation that is making weapons.

Will & Grace (7:30 p.m., Ch. 5): Jack tells Karen he thinks she belongs with Stanley, not Malcolm.

CSI (8 p.m., Ch. 2): The team believes an entire family has been murdered but can't find the bodies.

Everwood (8 p.m., Ch. 30): Ephram begins giving piano lessons to a 14-year-old prodigy.

Without a Trace (9 p.m., Ch. 2): There's evidence suggesting that a woman missing for seven years may be alive.

ER (9 p.m., Ch. 5): John Leguizamo joins the cast.