OK, let's get this clear. I'm really not into sci-fi, but for some reason I love Stargate SG-1.
Jack O'Neil takes his team SG-1 through a Stargate. A round device that creates a wormhole. It gives you the ability to travel to distant worlds. It might sound like your usual sci-fi-series, but it's not! The plot is set today not in some distant millennium like many other sci-fi-series. I find that great. It gives you things, happenings and such you can relate to, and you can jump into the series at any time without having to learn many new terms and names of all the gadgets. They have some of course but thanks to O'Neil who likes to keep a simple terminology, there's not many.
The series has a nice blending of action, humor and drama. If you enjoy loads of special effects you're not going to find it here. They don't use many bad ones but a limited amount of well made special effects.