Area 57 is the name of a pilot produced for the 2007/2008 season for NBC. It centers on an Area 51-esque military base and the alien it houses. The pilot was not picked up.
3rd Rock from the Sun
Duck Dodgers
It Ain't Half Hot Mum
Red Dwarf
Elliott from Earth
Lipstick on Your Collar
Red vs. Blue
Mork & Mindy
My Favorite Martian
Who's the Boss?
Nick Cannon Presents: Wild 'N Out
Rowan & Martin's Laugh-In
The Larry Sanders Show
Futurama
The Head
Lilo & Stitch: The Series
Journal of the Mysterious Creatures
Key & Peele
Coach
Wander Over Yonder