On Episode 28 of the Android Central Podcast, Alexander from Austria asked if there was an easy way to turn off automatic updating of apps, so that he wouldn't have to contend with the downloads sucking down the roaming data. And over the weekend, XDA Developers member eddieringle released just such an app.
Your phone has to be rooted, but once you install Market Autoupdate Bulk Toggle, you can switch between auto and manual updates for all of your Android Market apps with a single tap.
There's no widget yet, but hopefully we'll see that added in the future.
More info at the source link, and a download link is after the break. [XDA Developers] Thanks, Sethjk!