Odds with Pairs in a showdown

Using a poker odds calculator I've tried to work out the best and worst possible 2 handed showdowns when a pair is involved in various situations. There where some interesting best and worst hands. Can anyone refer me to similar posts or tables containg generalisations of odds at showdown?

If you spot an error however small let me know!

Pair vs Same Pair
-Best-- A[img]/images/graemlins/spade.gif[/img]A[img]/images/graemlins/heart.gif[/img] v A[img]/images/graemlins/diamond.gif[/img]A[img]/images/graemlins/club.gif[/img] -- 2.17% v 2.17%
-Worst- 2[img]/images/graemlins/spade.gif[/img]2[img]/images/graemlins/heart.gif[/img] v 2[img]/images/graemlins/diamond.gif[/img]2[img]/images/graemlins/club.gif[/img] -- 2.08% v 2.08%

Pair vs Under Pair
-Best-- A[img]/images/graemlins/spade.gif[/img]A[img]/images/graemlins/heart.gif[/img] v 2[img]/images/graemlins/spade.gif[/img]2[img]/images/graemlins/heart.gif[/img] -- 82.95% v 17.51%
-Worst- 3[img]/images/graemlins/spade.gif[/img]3[img]/images/graemlins/heart.gif[/img] v 2[img]/images/graemlins/diamond.gif[/img]2[img]/images/graemlins/club.gif[/img] -- 77.28% v 17.78%

Pair vs Two Under Cards
-Best-- A[img]/images/graemlins/spade.gif[/img]A[img]/images/graemlins/heart.gif[/img] v 7[img]/images/graemlins/spade.gif[/img]2[img]/images/graemlins/heart.gif[/img] -- 88.74% v 10.78%
-Worst- 6[img]/images/graemlins/spade.gif[/img]6[img]/images/graemlins/heart.gif[/img] v 5[img]/images/graemlins/diamond.gif[/img]4[img]/images/graemlins/diamond.gif[/img] -- 79.53% v 18.63%

Pair vs Over and Under Card
-Best-- T[img]/images/graemlins/spade.gif[/img]T[img]/images/graemlins/heart.gif[/img] v J[img]/images/graemlins/spade.gif[/img]2[img]/images/graemlins/heart.gif[/img] -- 73.07% v 26.40%
-Worst- 3[img]/images/graemlins/spade.gif[/img]3[img]/images/graemlins/heart.gif[/img] v A[img]/images/graemlins/diamond.gif[/img]2[img]/images/graemlins/diamond.gif[/img] -- 64.75% v 34.63%

Pair vs Two Over Cards
-Best-- 8[img]/images/graemlins/spade.gif[/img]8[img]/images/graemlins/heart.gif[/img] v A[img]/images/graemlins/diamond.gif[/img]9[img]/images/graemlins/club.gif[/img] -- 57.34% v 42.38%
-Worst- 2[img]/images/graemlins/spade.gif[/img]2[img]/images/graemlins/heart.gif[/img] v J[img]/images/graemlins/diamond.gif[/img]T[img]/images/graemlins/diamond.gif[/img] -- 45.32% v 53.28%

Pair vs Dominated with Under Card
-Best-- K[img]/images/graemlins/spade.gif[/img]K[img]/images/graemlins/heart.gif[/img] v K[img]/images/graemlins/diamond.gif[/img]2[img]/images/graemlins/spade.gif[/img] -- 94.16% v 4.31%
-Worst- 5[img]/images/graemlins/spade.gif[/img]5[img]/images/graemlins/heart.gif[/img] v 5[img]/images/graemlins/diamond.gif[/img]4[img]/images/graemlins/diamond.gif[/img] -- 78.46% v 16.33%

Pair vs Dominated with Over Card
-Best-- K[img]/images/graemlins/spade.gif[/img]K[img]/images/graemlins/heart.gif[/img] v A[img]/images/graemlins/spade.gif[/img]K[img]/images/graemlins/diamond.gif[/img] -- 69.61% v 29.6%
-Worst- 4[img]/images/graemlins/spade.gif[/img]4[img]/images/graemlins/heart.gif[/img] v 5[img]/images/graemlins/diamond.gif[/img]4[img]/images/graemlins/diamond.gif[/img] -- 57.87% v 37.87%