How can I test and verify a vanity key before I send coins to it? I ran vanitygen and oclvanitygen on the same machine, and realized after my run that both exe's share the same output file.

I've had experience in the past where many programs append to the same TXT file that corruption might happen.

Regardless of the source of the corruption, what is the most complete way to validate a key created by vanitygen?

Update

I added the developer tag since I'm looking to do validation in bulk.  Command line scripts also work.
If you don't want to do it online, you can try to import the private key into Bitcoin-Qt then see if the matching public key is the one you expected.