Films that would make a great double-bill

I started thinking about this a few months ago. I had recently watched "We Live in Public" on DVD, and went to see "Catfish" in the theaters. Walking out of the latter film I couldn't help but think that the two would make for a fascinating double-feature. Both are documentaries exploring, at least in part, the implications of the increasing entanglement of society with the internet. Each comes to different conclusions. We Live in Public implies, or at least its subject thinks, that the internet is inevitably eroding our privacy, while Catfish implicates how the internet allows us to recreate ourselves virtually. I think the issues that each explores are both complimentary, and contradictory, albeit in different ways, and therefore ripe for discussion together.

I had the same thought last night about Fight Club and I <3 Huckabees. I initially popped in Fight Club, which I hadn't seen in forever (still a masterpiece), and afterward came up with the idea to make it a double-feature night. Both films explore some of the same themes (primarily nihilism and finding purpose in the face of the inherent absurdity of existence) yet take completely different approaches to get to arguably the same result. I really, really wish someone was there to discuss the two with (and I'd be happy to do so here if anyone is down).

Please don't just make this another list thread... I'm curious though what other pairs of films you folks think compliment one another and why.

thanks.... I did run a search, oh well... Nothing to see here.