Ooooo, good question.
70's: For Crying Out Loud
80's: I'm Gonna Love Her For Both Of Us
90's: Object In The Rearview Mirror
00's: Mercury Blues
I'd have agreed with you on Surf's Up as it's a fantastic song, but IMO the Loafster crucified it. If Meat did it to Steinman's production as it was on B4G then yeah, definitely that would have been my favourite.
Pud