JL: Wild Cards

I'm a bit late with my squeeing, but watching JL is a lot of fun, and deserves entries, even if I'm too lazy to write them right away.

So, about Wild Cards:
( spoilers... )

comic question, about DC's Wildstorm label...

I've been thinking about giving comics published under DC's Wildstorm label a try, in particular The Authority TPBs. After browsing the Wildstorm site for a bit I'm still not sure which trade is the first I ought to read, it seems The Authority: Relentless is the first collection, however it also seems like Stormwatch is about (some of?) the same people as Authority, so do I need to read those to understand the Authority series? I'm unsure in general about how the different series in the Wildstorm universe are related. Like, are all titles published under the Wildstorm label (Authority, Planetary, Gen¹³, Sleeper, etc.) set in the same universe, or are they separate?

Totally unrelated, the What Muppet Are You? quiz thinks I'm Rizzo the Rat, which pleases me.