1972: Fischer - Spassky (FIDE/match) - PGN Games, commentary.
1992: Fischer - Spassky (Unofficial/match) - Commentary and game highlights of rematch.
About: Fischer v. Spassky 1992 - number 64 from About.com's list of the greatest chess games.
At the court of King Boris - Kilkenny Chess Club's experience of meeting chess Grand Master Boris Spassky.
Biography
Boris Spassky - brief description of his career, with notation for some of his games.
ChessCorner: Boris Spassky - from their Chess World Champions feature.
Fischer King - description of the Spassky v. Fischer matches in 1972 and 1992.
Memories of Fischer-Spassky - from the IBM Deep Blue home page.
World Chess Championship : 1972 Fischer - Spassky - includes description of play with board positions for pivotal points in games.
World Chess Championship : 1992 Fischer - Spassky Rematch - highlights from the rematch 20 years after their historic match for the World Chess Championship in 1972.