Luckily my husband did our taxes in February via TurboTax but I know a few people who still haven't finished up their taxes. If you are one of those who still need to file a tax extention form 2010, TurboTax can help file your extention to October 17th. This means you have a month from today to finish up and TurboTax can help. I will tell you from personal experience that I can't imagine not using TurboTax to file my taxes. TurboTax is a name you can trust, it is simple and takes you through the process step by step and you know you did it correctly because they send you email confirmation.
If you are stationed outside of the US and are eligible military, check out TurboTax as well.
tax extention form 2010