The top 10 are:
1 Sony Walkman TPS-L2 (1979)
2 Apple iPod (2001)
3 (Tie) ReplayTV RTV2001 and TiVo HDR110 (1999)
4 PalmPilot 1000 (1996)
5 Sony CDP-101 (1982)
6 Motorola StarTAC (1996)
7 Atari Video Computer System (1977)
8 Polaroid SX-70 Land Camera (1972)
9 M-Systems DiskOnKey (2000)
10 Regency TR-1 (1954)
Tops in the 2000s are:
2000 M-Systems DiskOnKey (9), Sony PlayStation 2 (11)
2001 Apple iPod (2)
2002 iRobot Roomba Intelligent Floorvac (31), Jakks Pacific TV Games (49), Sanyo SCP-5300 (30)
2003 Handspring Treo 600 (20)
2004 Motorola Razr V3 (12)