SHUURL provides a safer way to share short URLs
You can Shuurl at work in the screenshot above. Not only are users provided with a thumbailed image of the destination page, they're also tagged with Web of Trust-style safety icons. The coding is the same as atraffic signal: green means go, yellow means proceed with caution, and red means stop before you get into trouble.
The thumbnails are small enough to be inobtrusive - which coworkers will welcome if you happen to be sharing content that's a bit on the NSFW side of things.
Shuurl is still fairly new, so some additional features I'd like to see aren't there yet - like a bookmarklet and API access for developers.
If you want to simplify the process, a quick right click of the "shorten" text box and you can add a search keyword for it in your favorite browser for quick truncations.