anorak

Don't ever use the hood on your anorak; and, if you do, for heaven's sake don't pull the string tight so that you peep out like a little baby in a siren suit.

He has described himself as the uber-geek, an anorak's anorak, a standard bearer for fellow Star Trekkies everywhere, and his air of bland, amiable bafflement has served him remarkably well in a string of TV and film roles.