Peg Solitaire

Just Glass Pegs Game
Jump over peg to peg until there is one remaining peg, if you can.
http://www.justglass.com/flash/pegs.html

MarbleHop
Hop one marble over another to remove them from the board in this online 3D logic puzzle game in Shockwave. Includes community message board.
http://www.marblehop.com/

The Triangle Puzzle
The object is to remove all but one ball from the triangular board in this Java-based solitaire puzzle. Play by jumping one ball over another ball to an empty spot on a choice of three boards.
http://imagiware.com/triangle/