Im a die hard Appler. I used Apple II computers in high school, first computer (aside from TI994A) I ever bought was an Apple notebook in 1994, which was replaced shortly there after with a performa 636CD which I thought at the time was the best thing I ever owned. Today I own alot of Apple stuff. 27" imac, mac mini, MBP, ipad, ipod classic and an ipod nano, and I think it is safe to say that their products are the greatest thing since sliced bread.
Here are just a few things I like about them:
Design and Innovation: Best looking computer products out there, and truly THE leading company when it comes to bringing innovative products to market (think iphone and ipad, backlit keyboard, etc)).
Reliability and ease of use: They keep going without slowing down, and are very straightforward to use and troubleshoot compared to windows products.
Warranty and Customer service: Once again Apple scores a 10 here. I've walked into an Apple store with a defective iphone or ipad within my one year warranty and walked out with either a new one or refurbished one. Had some issues with my out of warranty MBP and I walked into an Apple store with it and walked back out an hour later with it fixed free of charge.
All of this was reinforced when my employer gave me an HP elitebook running windows 7 as my work computer. The notebook itself is horribly designed compared to an apple notebook, and while W7 seems to be better than previous windows systems, it still does not compare to the Mac OS.
All that said, as good as I think Apple is I still am highly critical of them on several counts.
I think their products are priced too high, and they don't listen to the needs/wants of the customer base (think blu-ray) very often.