Sometimes promos -teasers, trailers, interviews, etc- make it seem like a movie will suck. Other times, the studios promote a movie by trying to pass it off as a comedy when it's a drama, or Horror when it's Suspense, etc. So you go in with all the wrong expectations, or perhaps you skip the movie entirely when the actual product would be something you're interested in - not that you would know by watching the horrible trailers. Maybe it stars an actor you hate, or the movie was directed by someone who never made a movie you enjoyed; the premise seems silly, the book sucked, it looks darn stupid, etc.
Whatever the case might be, movies can surprise you...by being good. Here are a few of mine:
Knowing (2009) I saw the reviews, but the one that stood out was a very positive one: Roger Ebert’s. I don't read entire reviews before I've seen a movie, but I noticed he gave it 4 stars; I had to check it out. Before Ebert's review I figured the movie was going to be a colossal POS. Then I watched it, and I loved it, and I had chills, and I cried and I couldn't wait to see it again and never see it again.
Underworld: Rise of the Lycans (2009) I loved Underworld (2003), and I couldn't have hated it Underworld: Evolution (2006) any more. So I skipped the third one, figuring that it would suck more than the second one. There is a reason why deductive logic doesn't always work - nothing is 100% for every case. In Underworld's case, the third movie didn't suck, all the contrary, it was enjoyable and well made.
The Bourne Identity (2002) I remember it like it was yesterday: A huge promo for this movie sticking out against the heavenly backdrop of blue sky. I thought, "Well, that's not going to suck." Sometimes cynicism easily turns into irony - years later I watched the movie on DVD, and it didn't suck. It became, along with the two released sequels, one of my favorite action movie franchises. I went to see The Bourne Supremacy (2004) as soon as it came out. Now I have all three movies on DVD and I eagerly await for the fourth installment. Heh.
House of Wax (2005) I hated the idea of this so much. Back in 2005, I wouldn’t even go see it to make fun of it afterwards. But after catching up with Gilmore Girls and Supernatural in 2006, I decided that I at least had to fast-forward through some of it to catch Jared Padalecki in it. Well, it's not a great movie. It's not even a really good movie, but it's a decent teen/20something Slasher. It's enjoyable enough the first time; and for Jared Padalecki fans, it shows just how good he is at acting hurt. He's too good. Heh.
RocknRolla (2008) It looked messy and frantic. It is; and it ROCKS.
The 40-year-old Virgin (2005) I skip comedies when they look too offensive or stupid. I cried watching this, from laughing so hard. I'm glad I gave it a chance, and I'm glad that actual humor still exists in big studio comedies.