I don't have any links, but a couple weeks ago I heard a cover of Lionel Ritchie's "Easy" done by Faith No More...it was so horrible that I laughed my tuckus off [Reply]
I love me some Phil Lynott. (Emerald is still one of my favorite songs - especially the live version). No pretty video, but I found the sound on this version better and some good audience sing-a-long. http://www.youtube.com/watch?v=0zEZriQOA2o
and if that isn't enough Whiskey in the Jar for you, here is U2 doing it with the only remarkable thing about it being the audience singing. http://www.youtube.com/watch?v=eqjM9TjQNdA