Of course, you can also go directly to the forms, and back to the interview if necessary. One obvious benefit of the software is that it obviates the need for repetitious input, such as name and social security number. In fact, the software sucks in last year's return and picks up all the routine information such as name, address, and even all the sources of interest, dividends, and contributions, with values reset to zero. If you have used the program for a few years, there is even a five-year comparison summary, which is helpful and informative. That way you can make sure that nothing is overlooked.
Most programs also have state tax software which, for Connecticut, is great.
Since all the data come from the federal return, including even the estimated tax payments to the state, the process is effortless. The amount of tax help and advice has also increased from the previous year. I find one of the best features is the audit step that you run when the form is filled out. It checks the return for missed entries and inconsistencies. Furthermore, it will compare your return with others in the same income range.