I put off my taxes long enough that I lost the previous year's computer file then I lost the computer it might have been on. But, never fear, I had the pdf file and I was able to simply upload that file and I was ready to go. I quickly entered the current year information and then was done in a blink!
This is the eight year in a row in which I have used the H&R Block Deluxe tax software. It has been easy to use and I honestly believe that it has saved me a significant amount in tax preparation costs; on the order of several hundred dollars each year. It is thorough enough in the questions it asks that I don't think I have missed any possible deductions.
The ability to import tax information from previous years is a significant bonus. So too is the included feature which analyzes your return to look for items which make your return likely to trigger an audit; giving a peace of mind when you finally send it off.
I plan to buy this same program next year and have recommended it to several friends already.