another update: The Reverend Mommy says in a comment below that these episodes are available at fancast, so I looked it up. Here's the link. Thanks!
update: Sometimes these show up and sometimes it says they aren't available in my region and sometimes it shows no videos at all for Star Trek. But if you can see them it's great.
The Original Series of Star Trek is available online for your viewing pleasure compliments of CBS. The Man Trap is here:
HT: The Classic Science Fiction Channel