What is the record for most home runs hit by an individual batter
against an individual pitcher, and who are they? A Top Ten list would
be even better...

Here is a list of the Career Home Run Leaders and the pitchers they
homered off of most:

Top Victims of Career HR Leaders

Player             Career HR   HR   Pitcher

Hank Aaron            755      17   Don Drysdale
Babe Ruth             714      17   Rube Walberg
Willie Mays           660      18   Warren Spahn
Frank Robinson        586      10   Larry Jackson
Harmon Killebrew      573       9   Earl Wilson
Reggie Jackson        563       8   Wilbur Wood
Mark McGwire          554       7   Frank Tanana
Mike Schmidt          548      11   Bob Forsch
Mickey Mantle         536      13   Early Wynn
Jimmie Foxx           534      16   General Crowder,
                                    Tommy Bridges
                                    Red Ruffing
Ted Williams          521      12   Virgil Trucks
Willie McCovey        521      12   Don Drysdale
Eddie Mathews         512      14   Bob Friend
Ernie Banks           512      15   Robin Roberts
Mel Ott               511      13   Lon Warneke
Eddie Murray          504       6   Milt Wilcox
                                    Bert Blyleven
                                    Frank Tanana
Barry Bonds           494       8   John Smoltz
                                    Greg Maddux
Lou Gehrig            493      15   Lloyd Brown
Stun Musial           475      17   Warren Spahn
Willie Stargell       475       8   Tom Seaver
                                    Phil Niekro

http://216.239.39.104/search?q=cache:NFK1Yw6zJOQJ:www.findarticles.com/cf_dls/m0FCI/3_60/70361731/p6/article.jhtml%3Fterm%3D+%22home+runs%22+%22off+one+pitcher%22&hl=en

Bowler-ga

The above website also adds:

"Duke Snider holds the record for most HR in a career off one pitcher
with 19 against Robin Roberts."

I bet the answer is in this book.
Sabr Presents the Home Run Encyclopedia: The Who, What, and Where of
Every Home Run Hit Since 1876

They have it at Amazon.com:
http://www.amazon.com/exec/obidos/tg/detail/-/002860816X/102-4710298-1370561?v=glance

Here's a short description:
Offers a history of the home run, includes all-time home run records,
lists home run totals by hitter and by pitcher, and provides
individual statistics for home run hitters.

You can buy it for $10, so it's only $5 more than the question, but
then you could have answers to more questions!