Just putting all the links here in one place for easy access.  This was a 6-part series describing exception handling in Lisp, specifically to point out the similarities and differences to exception handling in C++.  I went over both the more familiar C++ try/throw/catch model and a restart technique that handles exceptions without unwinding the stack. Here is the series of posts:

Part 1

Part 2

Part 3

Part 4

Part 5

Part 6