"Scientia vis est" or "knowledge is strength". This is a good article on pre/post workout nutrition.
While I agree with the article that eating a complex carb is essential before working out, I'm surprised it ignored the importance of protein. As ~LV~ suggested, whey protein is one good option pre-workout. Here is a very good article on the importance of protein both before and after working out.
Protein
The first component of the meal is protein. Eating enough protein will keep your body in an anabolic state during your workout to reduce muscle breakdown. I recommend consuming 30-40 grams of high quality protein in your pre workout meal. If you can, try to get your protein from whey protein and casein. You can achieve this easily by mixing 25-30 grams of whey protein in 300-400ml of skim milk.
I was in a hurry and just googled quickly for an article . is more like it.
I try to eat about 1 hour before working out and the best meal that I have found is this:
2 hard boiled eggs
1 apple
6 almonds
Alternatively I'll eat a Clif Builder bar
Yum, Cliff Builder bars are my favorite protein bar, tastes great, pretty good ingredients, no artificial flavors or colors, 20g of protein, and available on-and-off at Costco at a very reasonable price. I always have one in my gym bag and some at the office for when I need a quick snack.
For me, if it's 1.5-2 hours before I go for peanut butter and jelly sandwhich with wheat bread.