I've been waiting for some to write a front end for SpotLight that enables access to its AND, OR, and NOT capabilities. This is the first one I've found. So far, it seems to work. I'd like it to have more features such as retrieval of history beyond the previous one, Help pages, etc.

It seems great for a .1 release, but given its room for improvement I'll give it 4 stars rather than 5.