I don't get the appeal of Soilent Green, but maybe you do. They're on tour; go see 'em if you want.
Another reason not to trust movie critics: I watched Constantine last night, and it was really fuckin' good. Sure, Keanu Reeves is kinda wooden - whoever the guy is who played "Spike" on Buffy probably would have been a better, if non-marquee, choice for the part of a guy who drinks, chain-smokes and battles demons. But the rest of the cast is terrific. You got Rachel Weisz, a little weird-looking but also totally hot, playing twin psychics; Tilda Swinton as the Archangel Gabriel (she didn't do as much with the part as Christopher Walken did in the first two Prophecy movies, but she was very solid); and best of all, Peter Stormare as Satan. No kidding, it's worth a rental just to watch him for about five minutes at the end.
I don't know why the movie got the reviews it did. Maybe people were pissed at Keanu after the overpowering stench of the last two Matrix movies or something. But for a movie based on a comic book based on Bible bullshit, Constantine is very entertaining and relatively coherent. And it's extremely well filmed; it looks great. Check it out if you have a couple of hours to kill. You won't be sorry.