I love Yahoo's mobile portal -
http://us.wap.yahoo.com/. Click the Movie link on the home page, find a movie playing in a theatre near you, and once you go to that theatre's page, bookmark it.
If you log in with your Yahoo ID, it will know where you're located, and integrate with all kinds of stuff - Mail, Messenger (funky web based, but works for free), Photos, Search, Games (funky web based), News, Finance including your portfolios, Weather, Maps (driving directions), Address Book and Calendar (both web based - not integrated with the Berry's).
And it's very thin (you can use lite graphics) and sizable fonts. Great Berry portal.
AND, to get listings AND ORDER Tickets, go to
http://mobile.fandango.com/. You can't buy tickets for ALL theatres, but it's worth a shot. Works best if you already have an account set up on Fandango that way you don't have to enter a lot of info.
Yes I know a full YIM client is available for the Berry - just not for us Cingular victims!
J