Star Trek did make you think, dream and imagine... but so did many other shows. - Honestly most shows make you do those stated above.
I just don't understand the association of how being a 'trekkie' means you're a nerd or geek.
Star trek was 'technical' in that it had bells and whistles and buttons and talk about engineering concepts and physics and the like. To understand these concepts, most people have to have a background in the technical sciences, or at least an interest, and those types of people have long been seen as nerds and geeks. Then you have those folks that want to dress up and act like their favorite characters, which a lot of people think is strange.
But it is a stereotype - I liked the show and I was a long haried, heavy metal, head banger when I was watching it originally.
And BTW - they don't call this forum OffTopicz for nothing. It's rare for us to stay focused here ooooo kitty!