Apple II auto execute hacks

[Egan Ford <datajerk@gmail.com>]

My friends,

Steven Hirsch showed me a need trick a while back that auto executes FP 
BASIC programs when tape loaded.  After a bit of searching (docs, code, 
etc...) I do not see that as a possibility with INT BASIC programs on 
the Apple II (plain old II)--feel free to correct me if wrong.

However, is there a way to do this with machine code?  Are there memory 
locations that when written to will automatically execute something?

Messing with the stack is an option, other ideas?

Thanks.