I've been on a bit of a mission to find cufflinks for the groom and his merry men for the wedding. I uncovered a motherlode of rad cufflinks for non-traditional grooms/men (or if your traditional groom wants to use his sleeve to rebel a little!) All prices are in USD.
Nerd Groom

Left to right:
Pac Man Cufflinks by beaujangles, $48;
Arcade Token Cufflinks by dmented, $35;
Shadow Storm Trooper Helmet Cufflinks by Cufflinks, $27.99.
Steampunk Groom

Left to right:
Steampunk Watch Cufflinks by Rivkasmom, $55;
Vintage Typewriter Key Cufflinks by KeysAndMemories, $20;
Steampunk Watch Parts Cufflinks by edmdesigns, $55.
Stylish Groom

Left to right:
Snakeskin / Silver Cufflinks by depd, $60;
Palm Wood Cufflinks by lotusjewelrystudio, $95;
Brownie Cufflinks by ChicLinks, $75.
Graphic Groom

Left to right:
Fleur de Lis Cufflinks by gurlygirl, $58;
Bubbles of Love Cufflinks by deboradestefanis, $38;
Awesome Porcelain Octopus Cufflinks by lusterbunny, $25.
Now I just have to decide... :(