I've been a vegetarian now for almost four years. I was a vegan for around a year, but realised I couldn't give up cheese!
Make sure if you eat the beans, eat rice with it. That is a complete protein. (Burritoes are really good, I find.)
Egg Beaters are really good egg substitutes, and make great cheese omelettes.
I really like my veggie sandwiches, which are: toasted sourdough, mustard, cheese, lettuce, tomatoes, avocados, pesto, and cucumber.
Also, try lightly "frying" tofu in a pan coated with asian sauce (I'm sure you can find a nice one at any asian market) and garlic. Eat it with soy sauce and rice, and I'm sure you'll like it, plus it is full of good protein.
I really enjoy the Morningstar Breakfast Sausage Links; they don't taste too meaty but still have the spice of sausages.
Make sure you take a multi-vitamin! B-6 and B-12 are essential for the vegetarian.
And here is an AMAZING fat-free/low fat vegetarian recipe website:
http://www.fatfree.com