For instance? Mayor John Hickenlooper weaving Blake Street near the beginning of the route looking either confused or three sheets to the wind; a group of Star Wars aficionados highlighted by Imperial Stormtroopers wearing kilts; and, most amusingly, a brief look at longhorn love.
Yes, a group of around ten longhorn cattle were one of the attractions, and a momentary backup forced them to stop right in front of me -- at which point one took advantage by mounting another. That prompted a bemused "OOOOH!" from the crowd, followed by an awkward explanation or two by parents of young children, who got an eyeful before the longhorns' handler managed to perform a quick act of coitus interruptus.
Only in Denver. Happy St. Pat's, everybody!