Though I'm really burned out on WoW, I'm happy with my decision to go 5x druid. Dual spec has opened a lot of options... here's a few fun things about the class when multiplied by 5:

5x moonkins in PvP would allow some nice graveyard wipes when you bust out the 5x typhoon on rezzers followed by starfalls (if needed)
5x tree healers in battlegrounds would be supremely annoying for the opposition... you may not kill much (though 10 DoTs would take some down), but you could annoy the crap out of the other team (which in some fashion is winning)
1x tank, 1x healer, 3x DPS for PvE
15x treants
5x tranquility always turns heads and it's fun to see some crazy numbers
2138910918 HoTs to put on a random guy running around Dalaran guaranteeing a WTF moment
Stealth class is always fun
Many forms of dancing (bear, cat, moonkin, travel form, elf/tauren) for your own party