[gurtwo]

Join a meetup.com group of movie lovers (or whatever you enjoy, but avoid too-geeky groups). Slowly get to know people attending the meetups. Just be nice. Don't be afraid to politely express your opinions. When you see someone that seems alone or new to the group, be the first to approach them. You can meet tons of interesting people this way.

[benjamincburns]

Personally I think the "geekier" the better. To paint with broad strokes, geeks are passionate and indiscriminate. If you've got some subject matter you're quite passionate about, chances are you don't need to lean on your ample self-confidence to discuss it with other people who share the passion.