I would bet anyone on CD here that if you were able to look at the tag on any of those shirts, it would say Sears Roebuck & Co.
Yep.. Same place you can get em now.
And, a straight black tie is so unhip, even for geek terms.. you gotta get some ties like these:
http://www.headvoice.com/journal/arc...s/old_ties.jpg
Yep, you can't say geek without saying polyester.
And, hey.. don't forget the pocket protectors for the ultimate look, but skip the black glasses with the tape holding them together at the center..
That's just so overdone.
re:
http://www.ackisland.com/albums/hall...4/PICT0003.jpg
Instead, go for a retro look, and totally get some 3d glasses.
It'll look geeky, yet fresh and hip.
edit:
And if you want true geekyness (geekiness?), get some of the cubes, like Bob here:
http://www.thinkgeek.com/cubegoodies...a/images/1080/