Some cheeses
Ling rush ( i can have 8 lings at my enemies base by 3 minutes)
Cannon rush
Worker annoy
Gas Steal (build a refinery/assimilator/extractor on their gas spot to slow down them getting units that require gas, usually not effective against zerg
Sunken rush (If you and your enemy is zerg, rush and get a evolution chamber, then build sunkens on their creep, very effective in fastest games)

By thw way I played one of my friends yesterday, it was my favorite matchup, ZvP (Zerg vs Protoss with me as Zerg) and I rushed him with zerglings and he yused gas steal, but with lings, that didnt help him much
In the end I had 11 bases, he had 2, i basically mutalisk microed and frequently had all my hatcheries make zerglings and rush his new bases, the only trouble he ever gave me was with dts,  but i just had to upgrade overlord speed and pow, win, it was very funny to use prongs and cause him to send all his units to one of his two bases to fend off my mutalisks then rush him with lings on the other, very fun.