One combo I've grown fond of is:
{Aggravated Assault}
{Sword of Feast and Famine}
Attack, untap lands, activate aggravated, attack, untap... Rinse and repeat :)
Quite fun in EDH, gets crazier with something like a Titan (any of them)
Anyone else have similar combos?
{Hellkite Charger} has built in Assault. You need to pay upfront with him, though.