There are several means of finding movies on the Internet. The easiest way I've done it is through a subscript
ion to Netflix, which runs about
15.00 per month. As well as getting them to send you movies in the mail, it also
opens up hundreds and hundreds of movies that you can watch any time, and you don't pay for individual movies - just the access to movies for your monthly fee. So I can scan through movies, pick one out, start watching it, decide it isn't one I want to watch, go back to the list, pick another, etc. I might go through a dozen movies before I find one that settles in. You can't do that with all the movies, especially the newer releases, but it is still a pretty large list, and what I'm usually looking for is not something new but something effective.
Some sites charge per movie, so you can't go through a bunch without paying for them individually. There are also other sites that have free movie and TV show viewing. Most want you to register though, and then you get slammed with all the requests to upgrade to a premium account, which can be annoying.
I'm pretty sure you can get sporting events as well. Some may cost, some may not. Some may want you to register, etc.
I actually use music to work by - it's the movies that get my mind's undivided attention. My laptop also has a DVD player, so another option for me is just to throw in a disk.