Blogger has expanded their layout section to offer many, many more side-bar options than they used to. However, if you click on "add a gadget" on the layout page and go beyond their initial list, the hundreds of pages of offerings include some pretty offensive stuff (even as far as the racy photos go) because they include user-submitted sidebar gadgets.
I imagine that this is something they will start screening (when they become aware of it?). Ugh - I can't figure out where to register a complaint with Blogger. These do seem to violate their own policies.