Van Halen
Van Halen's infamous "no brown M&M's" request was reportedly instituted so that concert promoters would be forced to pay close attention to all the items on their extensive list — or else forfeit the profits of their show, due to a contract clause. You can find a sampling of their ridiculous rider below and the full version at The Smoking Gun.
The Demands:
Nuts
Pretzels
M&MS (WARNING: ABSOLUTELY NO BROWN ONES)
1 large tube of KY jelly
3 packs of Marlboro cigarettes (box)
Herring in sour cream
2 gallons non-carbonated, bottled spring water
3 fifths Jack Daniels Black Label bourbon
2 fifths Stolichnaya vodka1 pint Southern Comfort
2 bottles Blue Nun white wine