Well, Hackers and Scott Pilgrim both have people on inlines at some point ... if you're open to quads then there's Roll Bounce, Whip It and Subway (that last one was a real treat for me 'cause I'm a big Luc Besson fan

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(the original) Rollerball was kinda hard work at times with slow dialogue-heavy scenes and many plot holes, but it's also rewarding with some interesting concepts from a geeky point of view and there is some good skating ... the making-of includes interesting info about the skating side of things, too.