Fort William, Scotland - what to do?

[iluvmercs]

I'm heading there with a friend to go on a one day course, next Tuesday. However, we'll be heading up on Sunday, and coming back on Wednesday.
So is there anything for two guys, in their early 20s, to do or see? Are there any "must see" sights up there?
Does anyone know of decent restaurants, pubs or even bars and clubs to head to?

Many thanks,

Darren

[iluvmercs]

Thank you all for the suggestions.

In the end, we only had one day to waste, so we decided to drive out to Mallaig, taking lots of random detours on the way back.
The scenery was astonishing beautiful, and the roads fantastic! It appears the local council have been spending money on road improvements around that way, so it was mostly fresh tarmac!
Our course lasted the entire day on the Tuesday and we left early on the Wednesday.
We also occupied ourselves with a fun little road driving through (I believe) Glenn Nevis, and going for a little walk to take some photos.
There was a fantastic little sea food restaurant down on the quay, too.

I intend on taking my own back there, and to other places around the Highlands!

Thanks again guys!

Darren