I'm going to skip a gratuitous and unwarranted attack on the Bay City Rollers and their fashion choices, as well as their cover of I Only Want to Be With You, because it's actually not a bad effort, and it was a cheesy pop song anyway.
But Céline Dion doing You Shook Me (All Night Long) by AC/DC? You're minutes in and you're thinking, "This can't be happening". Some other diva comes onstage, but she hardly registers.
It's all at this collection of bad covers, which I found via Jay Zero Boss's shared Google Reader posts. Anyone else who's using Google Reader these days, get sharing those posts you find interesting but can't or won't blog about. It's all about sharing.
At that site, by the way, be sure to check out the comments, which have more greatterrible material.