< huge fan of popcorn. I use Orville Redenbacher popped in one of those big silver mixing bowls on the stove, using canola oil. I've read that peanut oil is even better, but that's expensive. I usually season it with garlic salt/powder, fine-grained salt like pickling salt, butter salt, and actual melted butter. Verah niiice.
Parmesan and Red Hot is nice for a change.
For microwave popcorn, I use cheap old Weavers, then I put a liberal amount of cheese powder my fiancee's mom gets from the Amish market in and shake it up...that's pretty damn good.
If you want to go deluxe with microwave popcorn, I like Orville Redenbacher's Pour Over series.