Lots of musicians have been either making appearances or announcing future appearances at sporting events—except for the metal band GWAR, which is receiving an online push to be the halftime act for Super Bowl XLVIII at MetLife Stadium. The attention-getting pairings are fun for all, but in a few cases the matches of performer and event could have been better.

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Event Performer Should be Reason
Super Bowl XLVIII Bruno Mars Bruno Mars Mass appeal
Texans-Titans Vanilla Ice Kings of Leon From Nashville
NHL opener Kings of Leon Vanilla Ice "Ice, Ice, Baby"
Mayweather fight Justin Bieber Eminem Takes hits, makes hits
Notre Dame--Michigan Eminem Justin Bieber Teenage girls
Mariano Rivera send-off Metallica GWAR Metallica's gone soft

+ The Sept. 14 title bout was a place to preen and be seen, complete with Heidi Klum, George Lopez and Jack Nicholson.

+ Singer James Hetfield was caught toting an Armani shopping bag and wearing flip-flops, so the band's license to rock has been suspended.

SIGN OF THE APOCALYPSE

A fan at Fenway Park had his face bloodied when outfielder Jonny Gomes punted a beer can during a celebration of Boston's division title.

PHOTOJEFF KRAVITZ/FILMMAGIC/GETTY IMAGES (MARS) PHOTOBOB LEVEY/GETTY IMAGES (VANILLA ICE) PHOTOKEVIN MAZUR/WIREIMAGE/GETTY IMAGES (BIEBER) PHOTOJOSEPH OKPAKO/REDFERNS/GETTY IMAGES (EMINEM) PHOTOELSA/GETTY IMAGES (METALLICA) PHOTOSPORTSTHENANDNOW.COM (FENWAY FAN)
HOLE YARDS PAR R1 R2 R3 R4
OUT
HOLE YARDS PAR R1 R2 R3 R4
IN
Eagle (-2)
Birdie (-1)
Bogey (+1)
Double Bogey (+2)