Over the last few months, I have run through the entire list of episodes for Star Treks TNG, DS9 and Voyager. As you can imagine, not all episodes are very good and some are downright insipid. The following are the rules of thumb that I have arrived at when deciding whether to skip an episode:
This is a clip taken from a British comedy show where Patrick Stewart plays himself. Hilarious heh.
I just finished watching the first episode of Star Trek: Deep Space Nine. Wow! The acting was so bad (and the story line wasn't much better :S) that I'm going to be getting the rest of it :D
All seven seasons of it - about 55GBs worth ;)