Pre-Workout:
I use to have a protein shake ahead of time, now I just have some caffeine to help with the intensity of my workout. I also have some ibuprofen or some other anti-inflammatory for my joints. I talk more about pre-workout nutrition below, and some of the Useful links discuss this also.
Post-Workout:
You should eat as soon as you can after working out. There is a window of opportunity that we have after working out, the reason behind this is summarized in this linkthat document. They also have a link to post workout nutrition and to other documents in the pdf. This is also the only time I make sure to have a bit of sugar because the "increased quantity of insulin in the blood will drive much needed glucose and amino acids through the receptor sites in the muscle cell at an increased rate."
Those are just my suggestions, out of everyone I have talked to and exercised with everyone was a bit different when it came to pre-workout nutrition, it is just hard for me to exercise on a full stomach so I eat little 2 hours before I workout. I also believe it is bad to eat too much before working out. I would just make sure to have some sort of carb(energy bars or drinks) for your energy levels for your workout.
Useful Links:
http://sportsmedicine.about.com/od/sportsnutrition/a/EatForExercise.htmWhat to Eat Before Exercise
http://nutrition.about.com/od/askyournutritionist/f/eatexercise.htmShould I Eat Before I Exercise?
http://www.abcbodybuilding.com/windowofopportunity.pdf<--has links to other documents also.