Grayguy said:
I don't really hate it. 90% of the time it's great. There is just those times when it needs more oomf, and that is what I want to solve.
if you want to spend money, you could swap in a 1MZFE fairly easily and an e153 5spd tranny, which should produce some nice power.
If you want to stick with your 5sfe, you could go with the Rippmods supercharger kit or go with the burien turbo kit or even wait for the shiftgate performance turbo kit to come out.
all of the above are very good options for making a camry fast, if you're looking for some marginal gains, you can do a search of the forum to find out how to do things like make a CAI for your camry, you could do a custom catback exhaust.
I would say you should go through the basics first though, try checking how dirty your air filter is, if it needs replacing, you could find a bit of power out of that. if your car's not very responsive, try some new plugs and plug wires, denso or ngk will work perfectly, stay away from bosch.
just remember though, you get what you pay for. if you want to get a huge increase in performance, you're going to spend some $$ on it.