If you missed BattleBots and want to see the matches/episode, here are a couple of ways you can see it online:

• ABC's website here. You can watch the full episode if you are a cable customer and get ABC, or watch the individual matches if not.
• Hulu here. You have to be a subscriber, and in the US.
• Youtube - it looks like the user TheYuGiTom has some good recordings of it, with a playlist here

I think that's all. Speak up if you know of a better way! I left torrents off this list, because I'm a little skeptical of them and don't want to post some random link I found. So I suppose that's an option, but you're probably better off with one of the links above.