From Beancounters I find this wonderful link to a list of bumper stickers / taglines.

Some good ones:

I don’t have a beer gut, I have a protective covering for my rock hard abs. (ask Chuck about that!)

Driver carries no cash. He’s married.

Keep the dream alive: Hit the snooze button.

What would Gandalf do? (I like this one: What would Scooby Do?)

Does anal retentive have a hyphen?

Jesus loves you. But I’m his favorite.

Lawyers have feelings too (allegedly).

Got any to add?