After my first entry to the Tridion Bookmarklet Challenge, to count items in the Dashboard, here is my second entry: View the Schema ID and Title for a selected Component. Drag the below box to your Bookmarks toolbar. Warning: The first time you use it the Schema Title will not load. However, from the 2nd time it will show. This has to do with the .load() argument and my lack of callbacks. It could probably be improved.

Frank Taylor implemented the same idea as an Alchemy Plugin:  What’s the Schema? It works from the Context Menu, so we can use it in more places than the Bookmarklet, and in his blog post he also explains how he made it.  Excellent!

View Schema Info

Big thanks to Peter Kjaer’s StackExchange answer about getting the $models object.