Rewind Guide: How to Catch Up on Shows You've Missed
Returns: This fall for Season 4
What You Can Skip: Season 1's "Wheels" and "Hairography" episodes, and everything but the finales of Seasons 2 and 3.
If you want to know what you're missing out in "Glee," fortunately for you, the magic faded a long time ago. We say stick with the premiere season (except for the two episodes we noted), watch the final competition in Season 2, and check out Season 3's "Graduation" to get caught up plot-wise -- and then you can go ahead and search for your favorite songs on YouTube to see if the show covered them. If you're lucky, it'll be a lovely homage and not a massacred mash-up.