No... it actually has just a tad more viewing area then a regular 13", but it still is just a 13". And if you are used to your Dad's laptop being 13", the MacBook won't be any smaller, it will be just a tiny bit bigger though.
However, it really depends on what you are going to be doing, if you NEED a wider screen, the 15" is more than enough...
I do graphics and web design, so a 17" (1440x900) is what I needed, plus I have an external monitor that is 1024x768, so I get a ton of extra space at that... but I need
If I didn't do graphics, I would be happy with a 15", or even a 13" if I wanted to be more compact... which might be good if I was still going to school.
Why a MacBook, if you don't mind me asking?
The Aluminums are still very good computers if you don't need something that will blow your socks off with it's speed.
Even though I do plenty of graphics work, 3D art, even tried 3D multiplayer gaming (Redline), and my 1Ghz with 1.5GB Ram has more than enough power to run it all...
But at a price point that is a lot cheaper than a MacBook... although, I see a MacBook in my future.