I saw Vince Welnick perform with and without the Grateful Dead a number of times in the 1990s (and with The Tubes, earlier, of course). He had the white light thing going for him to the max on good nights.
My listening recommendations: any concert tapes you can find of Missing Man Formation from 1997 to 1999, such as this one. (Look for shows with "All Too Much," "Golden Road," and "Astral Weeks.")
If you've read this far down the page, you might want to click into David Gans' Dead to the World broadcast on Wednesday, 8PM PDT. It's extremely likely that you'll find a kickass tribute to Vince's music there, either this week or the next.
In another time
In another place
In another face