Yeah, GIMP, Blender work fine too. :-) And Pure data... Been using NeoOffice myself as an office suite, working fine.
A few nice little OS X apps you may have missed so far: MIDI Monitor, LineIn, SoundFlower (I assume you already know Jack from Linux). Nice tweaks: Afloat, BetterTouchTool, Displaperture. Best (OS X only) Reaper complement imho: Numerology. You may also like junXion for remote controller stuff.
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