Pie guy, lol that's funny. Noticed it after you pointed it out but never had a problem with it (didn't really think of them being mispronounced though, just sang as opposed to spoken). I usually do dig up the lyrics for French songs to make out a few of the lyrics I can't catch, but usually I can make out about 95% or more of a song before looking up the lyrics.
But as far as Superbus is concerned it is the mispronunciation of English words that I find more interesting, happens a lot when French singers sing in English they often pronounce words that are the same in both languages closer to the French pronunciation(ie: radio in Radio Song).
And so this is not a completely useless post, here is a good quality video of Butterfly. Still waiting for the other high quality version of the videos to show up in the P2P or torrent networks, they're out there though.
http://rapidshare.com/files/36615017...erfly.avi.html
Rapidshare was the first to start working again without getting a server too busy try again later.