I enjoy shopping of almost any kind way too much. With clothes shopping, I kind of want everything and always forget how many clothes I already have. (I do need more wintery outfits, though...)
And when it comes to stores with video games or computer stuff, I just love to look at the boxes and awe at the physical representation of all of that stuff I learn about. XD;
The worst though, is shopping for books. I seriously go nuts. I'm buying out the entire math section, book-by-book. I currently want Calculus Wars, which everyone assures me means I have serious emotional issues. I also love books about technology, even though I know that they're woefully outdated and not searchable, making them so inferior to reading online. I guess I'm just old enough to still find paper appealing.
And then there's the manga section...