keezerj: Yep, been there, done that. It works, just be careful of O2. Last thing you want is to oxidize! That is another reason I like to keg, I can add hops or other things to change the beer over time. One time I had a vanilla porter that had very little vanilla flavor, so I puts some beans in vodka, let them soak for a while, and then popped it into the keg. Greatly improved the beer. Same thing with hops...if I have a plain tasting beer and want to add a little more hoppy goodness, in goes a sack of hops and it improves the beer almost immediately. Just watch the oxygen...if you can, hit it hard with CO2 before, and after closing the keg. Cheers!
Oh, and drink faster. Grin!