Is it locking up with the loading screen or taking a long time to load?
In-house, we have seen it freeze in various places (most notably between character selection and server entrance between 25-35% where it seems to do nothing) only to pick up ten minutes later and go back to loading. It is very difficult to tell if the game is frozen or doing something at this point (and letting a system sit a 100% CPU is rough).
We've installed in both Vista & XP bottles and had success.
Once you've seen even the start of the movie a setting is put into one of the game ini files that says you've watched the movie, so deleting the movie likely will not help at this point. Again, I wonder if it just seems like it is locked up and actually is not. We've actually got a Windows machine that sees the same trouble here... it takes a long, long time to get in the game. I cannot stress that enough.
If it is actually locking up, we'd love to have a log file.
What graphics card do you have on board? Do you know how to collect a log file with SWTOR launched?
If not, we have a Support Library Article that will walk you through it. Useful flags in this case should be +d3d,+d3d9,+wined3d,+module,+seh,+tid (note the absence of spaces, you should be able to copy & paste those flags to the "other" field as is). Unfortunately, the log file will be too large to attach here and will just spam the forum a bit. You'd be best off sending it in as a ticket (or to info@codeweavers.com) and then referencing this thread AND asking for me. I'll take a look and see if I see anything obvious and if not, I'll pass it off to our developers. To have our developers take a look it is very important that I know your graphics card and the exact version of the MacOS that you are running.
Many thanks in advance should you opt to send in a log file!