My experience is that cottons dry just fine, but synthetics, wool, etc get all staticky. Those tend to dry nicely on a rack, though. :)
Also, someone mentioned overdrying: I think it's helped me to put thick, long-drying fabrics (jeans, towels) together, and thin, faster-drying fabrics (socks, underwear, tanktops) together, to match the drying times. T-shirts are pretty flexible (they go in the smaller load!) Pretty sure it also cuts down on wear&tear, maybe.