First time using a starter

I brewed an american wheat beer last night and tried using a starter for the first time. I made a 1 liter starter of Wyeast 1272, pitched it in last night, check on it early this morning and wow! The air lock was bubbling like there was no tomorrow and it raised the ambient temp of a 5.5CF freezer (not plugged in) from 64-72! It smells amazing and I've never had a fermentation go off like this, i can see why its recommended.

Healthy yeast will do a better job.