BlackBerry Swiss Army Knife (BBSAK) is one of those desktop utilities that every BlackBerry junkie should have. The app lets you perform many useful actions on your BlackBerry that would otherwise be painfully complicated. Terrence let me know that they just released version 1.9 of the utility which is intended to fix many of the annoying bugs and interface quirks that were introduced in previous versions.
Keep in mind that since version 1.8 they have added a nag screen to the app for users who have not donated $5 or more. Its not that bad if you use the app infrequently but if you use it often I recommend donating to support the development.
BBSAK also recently put up their own website instead of just an ever updating forum thread. You can check it out and download the new version at www.bbsak.org.