Bob Lazar, who claims to have worked on apparently alien technology, is scheduled to appear on KLAS in Nevada tonight (Thursday, May 19) at 11:00 PM Pacific. (http://www.klastv.com)
Some other upcoming UFO and/or alien shows:
MYSTERY HUNTERS ( http://kids.discovery.com/schedule/series.jsp?series=67140&gid=11646 ) runs on Discovery Kids. This week, Saturday at 2:00 PM and 6:00 PM, they have an episode called SHAG HARBOR UFO/ILLKEY MOOR ALIEN. The latter incident included an alleged photograph.
UFO FILES ( http://www.aetv.com/global/listings/series_showcase.jsp?EGrpType=Series&Id=10963893&NetwCode=THC) on THE HISTORY CHANNEL is showing a 2005 production on Saturday at 6:00 on BRITAIN:S X-FILES (the Flying Saucer Working Party from 1950).
The History Channel is also showing a UFO mini-marathon a month ahead of the anniversary of the Kenneth Arnold sighting that kicked off the "modern era"...they are showing the eps on May 24th (Tuesday).
10:00 AM and 4:00 PM: Extraterrestrials
11:00 AM and 5:00 PM: UFO Hot Spots
12:00 PM and 6:00 PM: UFOs: THEN AND NOW? Cause for Alarm
REAL TV ( http://www.spiketv.com/shows/series/index.jhtml?seriesID=10670 ) on Spike has an episode from 1997 that shows footage of a supposed UFO in Nevada on Wednesday the 25th at 4:00 PM.