What I wanted this section for was to have a sticky containing Mac apps that do the jobs of their Windows counterparts. Peeps who migrate from PC's would have something to read and a list of apps that they need to 'obtain'.
When I got my first Mac I had Parallels installed (better springboard for running Windows on a Mac then VMWare IMO) and it took me near 5 months to find great Mac replacement apps and finally ditch the Windows crutch completely.
So perhaps we could use this thread to suggest apps and then I'll dig through it and haverst a definitive list.
So post up you top apps and argue against others mentioned.