Seeing Zack Morris break out "Friends Forever" last night was beyond awesome. Watching Mr. Belding, a.k.a. Dennis Haskins, play peek-a-moob while trying to sing "Don't Stop Believin'" with an '80s cover band ... not so much.
Making matters worse: Steel Panther repeatedly called him "Mr. Belvedere."
6/9/2009 3:00 PM PDT BY TMZ STAFF
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