I'm not aware of any 'sport' games available for macs...
the iLife software is very good for photography, movie, dvd creation etc.. iLife used to come free with the iBook, iMacs etc not sure if it still does or not, but that could be an option if not. Or possibly the new magic mouse.. or the magic trackpad.. they are very cute, and quite good as you use gestures on the pad instead of moving a mouse.
There's also microsoft office compatible software set called iWork .. which has a word, excel and powerpoint equivalent, you can open microsoft office docs within it and save the docs in office format so none macs users can open them etc. Might be useful?