Gunter glieben glauchen globen! It looks like this season's contestants on Dancing with the Stars will — for at least one night — be head-banging instead of waltzing.In what strikes me as an odd pairing, English rockers Def Leppard have posted on their website that the band will be stopping by DWTS for a performance on April 29, in the midst of their 20-date trek with Styx and REO Speedwagon. (Someone please keep Bruno out of the mosh pit!) The following night the band will appear in a slightly more comfortable setting, performing an outdoor mini-concert on Jimmy Kimmel Live! What do you think about having the rock-and-rollers grace the ballroom? —Adam Bryantread more