I rode the bus to Venice Beach and back today. It cost me $3.49 ($1.75 each way, minus the penny I found in the parking lot). It arrives every 10 minutes-ish, and gets you pretty much right to the beach in under an hour from where I live. Boom.
I love Venice Beach. Before I moved to a place with an ocean next to it, I imagined my beach time as a serene, isolated experience, which is not so much the Venice experience. I have to admit to myself: I really like the crazy humanity of Venice.