The Mr Beer kit is where many of us got started. The West Coast Pale Ale that comes with it has been often compared to the light-style beers the macrobreweries like BMC (Bud, Miller, Coors) produce. It's a cheap enough place to get started, and who knows? Maybe a year from now you'll be saying "What the hell was I thinking with that light beer stuff? This stout/porter/whatver is a thousand times better!"
Or maybe you'll like the experience of brewing your own, but still prefer a lighter flavor in your beer. You could end up with a dozen Mr Beers in your closet bubbling away with your West Coast or Cowboy Lager.
Or maybe you'll drop 30 bucks on it, decide it's not your thing, and move on. No matter what ends up happening, it's a good place to start. Oh, and if you want more than 2 gallons at a time, you might have a look at the Coopers kit Here which is a bit more expensive, but brews 5-6 gallons at a time. From what I've read, many people are more satisfied with the quality of beer from the Coopers kit than from Mr Beer. Personally, I'm at the stage where Mr Beer got me started, and it sparked my interest enough for me to drop a chunk of my tax return on a "real" kit.
Good luck, and may you brew the beer that you most enjoy. Prost!