David Sirota, Nation contributor, blogger and former Sanders staffer who lives in D.C. has posted a Sanders for Senate in '06 ad on his Sirotablog. It's a freebie, not sponsored by Bernie, but it looks real nice, and sends you directly to the donate page on Bernie's website.
UPDATE: The Sirota Bernie ad is also up on MyDD, Burlington resident Jerome Armstrong's political blog. There's a similar ad up on Daily Kos. And on Atrios. Is this official campaign stuff, or is it part of a rogue campaign?
UPDATE: The as-yet-unbloggy Peter Freyne points out that Sirota lives in Wyoming.