For reporting on your 2011 tax return:
Business mileage: January - June $ 0.51 and for July - December $ 0.555
Charitable Mileage: all of 2011 and for 2012 $ 0.14
Medical Mileage: January - June $ 0.19 and for July - December $ 0.235
Medical Mileage 2012: $ 0.23
All rates are per mile and contemporaneous records are absolutely required without exception!