If you're completely overwhelmed when selecting seeds for your garden (and personally, after twenty minutes with a seed catalog, I'm ready to hang it on the wall and shoot darts in lieu of actually choosing), you'll welcome this recommendation: Matt's Wild Cherry Tomatoes.
We purchased our seeds from Renfrow's Hardware more than two years ago, and we're still going strong. The plants have never given us any problems with pests or blight, and they produce tons of cherry tomatoes all summer long. The fruit is sweet with rich, red flavor, and its seeds produce new tomatoes so easily that you'll likely end up with seedlings next year from this year's plants - perfect for the lazy gardener (a.k.a. me). If you doubt yourself and start too many, let me also suggest Madhur Jaffrey's sweet tomato chutney, which we ate on everything from tofu dogs to grilled vegetables almost every day for two solid months, and still look forward to eating this summer.