Has Glee Gotten Too Dark?

Lots of you thought last week's Glee went too heavy on the social issues and too light on the Slushie, but some of you found it touching and more than a little bit brave. Tonight's "Duets" episode seems like it could be a return to form for the series that made its reputation on lavish production numbers and twisted amusement. So what do you think: Should they go back to the old ways, or keep going where they're going?