Classic NBC show starring David McCallum from the 75/76 season.  I was able top catch it again when it ran on TRIO"s Brilliant But Cancelled show, but owning them on DVD would be swell.  A lot of big names started on this show (Steve Bochco was one of the writers).  Hell, as a bonus you could throw in GEMINI MAN which was a similar attempt by the same producers the following season (starred Ben Murphy) 

--Mr Bill

You can get it on DVD from Rare TV at:

http://www.raretelevision.com/index.php?searchStr=INVISIBLE+MAN&act=viewCat

I recently got a rare TV DVD from them, and it was a good deal and good quality.  I heard about them on IMDB, and glad I did.

mr b