Star Trek: The Next Degeneration
"Day of the Eyesore"
(front, l-r) Deanna Troi, TOS Crewman, Lt. Expendable (a.k.a Locutus of
LRDC), Jadzia Dax
(back, l-r) TNG Crewman, Tasha Yar, Beverly Crusher, James T. Kirk,
Geordi LaForge, Worf
"Captain's Log, Stardate 1993.12; James T. Kirk commanding. The Enterprise-D has been sent back in time to discover the origin of a highly intelligent transmission discovered in the 24th century. Because of my previous missions to late 20th-century Earth, and because Captain Picard is currently undergoing special medical treatment on the planet Minoxidil 2, the Enterprise has stopped on its way back in time to pick up myself and other key personnel from both generations..."
Perhaps the rest is best left to your imagination (or the distorted memories of anyone lucky enough to have witnessed this momentous event, a skit so over-the-top that it dissuaded everyone in the center from providing entertainment at the following year's holiday party!)