Today on TV

Published: Thursday, May 18 2006 12:00 a.m. MDT

That '70s Show (7 p.m., Ch. 13): The hourlong series finale.

CSI (8 p.m., Ch. 2): Brass clings to life. (Season finale)

American Inventor (8 p.m., Ch. 4): The season finale.

Will & Grace (8 p.m., Ch. 5): Following an hourlong highlights show at 7 p.m., this once-proud sitcom signs off with an hourlong finale.

The O.C. (8 p.m., Ch. 13): The kids graduate. (Season finale)

Without a Trace (9 p.m., Ch. 2): There's a shootout in the office. (Season finale)

ER (8:59 p.m., Ch. 5): There's yet another shootout in the hospital. (Season finale)