I'm an ease/whizz addict - but if you're doing comps with tons of layers etc. it can begin to slow it down, so I was in need of a more 'native' way of quickly setting velocity values - I've been using keysmith now and it's pretty dang awesome.
http://aescripts.com/keysmith/
This is currently just for ease values - so bounces and springs are still gonna require something else.
http://aescripts.com/animationpatterns/ is a another unique way of doing it that I haven't checked out yet.
Looking forward to other people's suggestions, but hope that helps.
// jayse