Agreed. Cscope is pretty damn fast & handy. I use it with the vim plugin when doing Android dev and it works well to quickly look-up definitions. What I find most impressive is how fast it builds the references. I can essentially build a cscope.out file for the entire Android project in under 4 minutes. The only thing I've had trouble with is getting the Java tags to work. Anybody else know how to set that up?