I've had C2. It tastes pretty much like any softdrink sweetened with Splenda. That is, it tastes not near as bad as stuff sweetened with other artificial sweeteners. Splenda is made from sugar. Still, it's not great, nor is it bad. I like it because it has half as many calories as regular coke and it doesn't taste too yechy.
As for Sake, someone asked about Sake that isn't clear. I've had some "milky" looking sake. In fact, yesterday I was doing the rounds of the Japanese markets in the Phoenix area and I came across at least 1 bottle that was like that. The milky kind tastes a lot "grainyer" in the form of ricey grainy.

How's that for a technical description?
Here's the
Wikipedia entry for Sake.
FlashJeff: Beer drinking is an aquired taste. That is, until you taste a beer which is tolerable, you won't like it at all, but once you have a decent one, your tastebuds open up and are ready to try other kinds. Granted, most popular American beers: Budweiser, Miller, Coors, etc taste exactly like what they look like: horse piss.
However, try an amber beer the next time you're eating steak or some other meat. For Japanese flavor, try a Kirin Ichiban. My wife absolutely HATED beer until she tried that one and now she enjoys a beer from time to time.
As for what Sake tastes like - the generic kind you find at ANY sushi bar is semi-sweet and very smooth (doesn't hurt when you swallow it like whisky). You fill up the little shot glass, yell "kampai!" and swallow the entire amount in one gulp. It's not as strong as whisky or hard liquor, so doing so a few times won't cause you to fall onto the floor.
Both Sake and Beer drinking are no fun done alone. Make sure before you try sake that you have a few friends with you.