The Griswolds, headed by Chevy Chase, are taking what could be one of their last family vacations.

Series regulars Chevy Chase, Beverly D'Angelo and Randy Quaid (who joined for "Christmas Vacation") are all back for more, and thank God for Quaid, who injects a few bracing shots of mangy humor into what is otherwise a lukewarm brew.

If you enjoy an occasional taste of mental junk food, you might find Las Vegas Vacation worthy of a springtime dollar-cinema visit. Otherwise, hold out another decade for sexagenarian Chevy in Palm Springs Vacation.

Chase, like his Vacation movies, are things of the past. This is a series that should have died with the '80s. Instead, inexplicably, it has limped on into the '90s.

Chase is a veritable black-hole of mirthlessness who sucks every ounce of fun out what might otherwise be a fairly diverting comedy.