My wife and I come to Texas to visit family periodically and on an earlier trip we stumbled across Spaghetti Warehouse. We went in blind, knowing nothing about it and were pleasantly surprised, so this trip we immediately went back. We got there early so they weren't busy. Our waiter was outstanding, great personality and helpful. I had the spaghetti this time, but have also had the 15 layer lasagna, which is excellent. My wife got the combo, in this case with penne rustica and the aforementioned lasagna. Only complaint, you can't get the penne rustica by itself, only as part of the combo. That's her favorite, but it made my brother-in-law happy as we sent the lasagna home to him!
Overall, we are very happy with this restaurant. We thought the prices were reasonable, lots of variety on the menu, and excellent service. (I wish I could remember our waiter's name, he was excellent!)
We recommend it with no hesitation.