So... you just got a nasty e-mail, or you need something to work into that office argument. Here are some resources I've used. If you have others, post them!
http://thinkprogress.org/mccain-flip-flops/#roeThink progress documents McSame flipflops
http://www.mahalo.com/John_McCain_ScandalsNot sure how reliable some of this is, but it's some entertaining reading
http://www.huffingtonpost.com/2008/05/16/mccains-lobbyist-scandals_n_102037.htmlThis page from huffpo has some interesting stuff on lobbyist links
http://www.democrats.com/mccain-scandalsDemocrats.com (they drive me nuts, but they're well intentioned), has some really good stuff on Rick Renzi, Keating, and a host of other interesting things you might have forgotten
http://www.vietnamveteransagainstjohnmccain.com/Again, not sure how reliable some of this is, but it's some entertaining reading
http://www.aflcio.org/issues/politics/mccain.cfm?source=mccainrevealedDamn, there's a lot of information here. It's a wonder what good work Union workers perform!