1. An article of manufacture for use in a computer system for debugging an executing computer program on the computer system, said article of manufacture comprising a computer-useable storage medium having a computer program embodied in said medium which causes the computer system to execute the method steps comprising: storing an event description and a debugger description in a table entry in an events table, said event description describing an event occurring during execution of the executing computer program; monitoring for the event; detecting the event; searching the event table responsive to the detection of the event; finding the table entry corresponding the event; and responsive to the finding of the table entry, invoking a debugger specified by the debugger description in the table entry corresponding the event, said debugger being used to debug the executing computer program.