I don't own any geek-themed shoes (I'm more of a geek-themed t-shirt guy), but after seeing these Han Solo sneakers from adidas, I think that may change. The shoes - which are Carbonite-grey with blue and red highlights - are smooth-looking enough to be appreciated by non-SW fans (I appreciate that there's no distracting Star Wars logos plastered on the side or back of the shoe), while still guaranteeing that geeks in the know will be impressed.
The shoes will be coming out later this year, and there's no word yet on pricing. But given that adidas shoes inspired by Darth Vader and the Millennium Falcon run just north of $100, you're probably looking at something in the $100 to $120 range. Shoe geek website Highsnobiety has additional pictures of these great shoes.