ALIENS was very intense. I had the privilege of watching it a few times in the theater, which allowed me to watch the audience at key moments of terror. Watching a room with hundreds of people in it all jump a foot out of their chair at exactly the same moment is something I've never forgotten. At any rate, Paxton was the comic relief. I was wondering if you liked how he offered a release from the tension, if he made you laugh, or if this was another character that didn't work for you.
Oh, right.
Yeah, he didn't work for me because I just didn't find him funny. But even if I imagine moments I did find funny in horror films, they never made me think they were better horror films. Better films, sure, but better films at the cost of inducing less horror. I don't want to say this is totally either/or, but man, it sure feels like it is, in my case at least.
Signs is a pretty good example. I really enjoyed it (I think I saw it four times in theaters, and partially for exactly the reason you described: to see how other people reacted to it), and it cares more about building tension than basically anything else. For whatever reason, the last line of Ebert's review of the film (phrasing might be a tad off) always stuck with me: "It's still building when it ends."
Anyway.
Signs has lots of moments of levity, and I like most of them. I think they make the film better...but they absolutely diffused the tension for me. Perhaps necessarily. And the film has so much
excess tension that it's a better story and a better film for giving a little of it back, particularly since the thing it cares
second most about is emotional catharsis. But there is absolutely a recut version of
Signs somewhere in the multiverse that is much scarier and more impressive as a horror film, I think, for eschewing all that.