There have been quite a few FML BlackBerry apps released over the years for the awesome www.fmylife.com website. Tom let me know about the latest by Antoine Réveillon which allows you to easily read the stories from FmyLife. The thing is if you go to the FML website they have this app listed as the OFFICIAL FML BlackBerry app which says something I guess.
This official app lets you to send them your FMLs, log in to your account, read and post comments, moderate the pending FMLs. This is just the first version and they are promising updates. You can find the free FML app in App World.