Hard Drive Testing

I have a hard drive that freaked out a bit on me a few months ago. My windows installation got upset and, even after a bunch of scan disk runs (a lot of scan disk runs), virus scans, etc., I never got it back up. I ended up buying a new hard drive and reloading everything.

Now I have this drive that, after reformatting, appears to be fine. Is there any very cheap or free utilities I can use to see how it’s doing. I’d hate to retire it – it’s a 250 GB drive – but I don’t want to trust it too much until it goes through some further testing. Any suggestions?