Nope, not dangerous at all
![Smile :-)](./images/smilies/smile.gif)
...within reason, of course, everywhere is dangerous if you're irresponsible. I've been there four times now, it's like a second home. The first two were related to my Master's thesis (...well, okay, the second time was to "get photos" for the thesis, which honestly I probably didn't absolutely need - and certainly didn't require 4 weeks, lol - but it was pretty much "go on vacation or thesis is not getting done" =p). The last two times were just vacation...sadly, each trip is getting shorter (first was 9 weeks, second was 4.5, last was 3, and this past one was just 2 - now that I work full-time, I have more money to spend on vacation but less free time to do so). Nica has pretty much everything Costa Rica has (with the exception of an army of resorts all over the place), but at a extremely small fraction of the price, and the people are just really friendly; the tourism is picking up and more and more tourist infrastructure is fitting into place, but it's still small scale in comparison. Less commercialized, which is how I prefer it.
As for the movies - the main theatre in the capital gets a fair bit of the new/hot films. Most are dubbed, but the bigger ones are often available in both dubbed and subbed. I've seen several films there, including The Dark Knight and Half-Blood Prince. In the case of Oblivion, it was available in both, so I would have been able to watch it in English.