Excluding the obvious X-files, which crime shows feature the investigation of UFO topics? So far I have:

(1) NCIS - "Vanished" - Season 2, Episode 26 - Investigation of Crop Circle.

(2) Without a Trace - "Light Years" - Season 3, Episode 50 - Suspected Alien implant and abduction.

I also think there is a CSI episode, maybe called "Leapin' Lizards" where suspects in a murder case are UFO-club members. It was is season 7 I think. Need help on this one.

Any help would be great. Links and detailed references would cool.