Name five words (or more if you can find them!) longer than two letters whose first two letters are the same as their last two letters.

Onion, tomato, salsa, verve, Miami, magma, edged, church, decode, retire, maxima, eraser, emblem, legible, insulin, require, stylist, template, educated, estimates, termite, sense,...

Well done indeed--and none of the ones I was thinking of!
How about three letters front and back?

Booboo

I can do four letters too...

abracadabra

:-D

To cheat we could just find the palindrome thread...

that way the amount of letters you want to set is limitted by how long the word is.
eg. 5 letters
M A D A M
7 letters
R A C E C A R

You hotshots are a bunch of Einsteins!

Nice, al. Particularly like the terrific change of phonemes in hotshots, unlike say tartar or tse-tse.
Sorry, griffindance, but palindromes aren't quite the same. Abracadabra certainly works though.