Yes you can. The November 2009 BYO magazine has a few articals this month about that very topic. Check it out. You can use programs like Beertools to scale any recipe down to the size you want to brew.
Why yes, yes I am a metrosexual!
On taps 1,2&3: Una Mas Cerveza, Ham in a Can, IPA
Primary: XINGU Clone, Rye P.A.
2ndary: Low Gluten IPA, Bourbon Oak Aged Vanilla Porter
Kegged: Sh*tty Orange Hefe, Una Mas Cerveza, Smokin Hot Blonde, Belgian Dubbel
Next up: Una Mas Cerveza, Pecan Pie