Beat Contra without a continue, Mike Tyson's Punch-Out!!, SMB.3, Super Mario Kart, and Super Mario World over the weekend, which I think* are all already on my list.
edit: Thought wrong.
First 50:
51. Willy Beamish Sega CD
52. Sewer Shark Sega CD
53. Jurassic Park Sega CD
54. Star Wars Rebel Assault Sega CD
55. NHL '94 Sega CD
56. Spider-Man vs. Kingpin Sega CD
57. Ironsword NES
58. TMNT Return from the Sewers Gameboy
59. Duck Tales Gameboy
60. Duck Tales 2 Gameboy
61. Super Mario Land Gameboy
62. Super Marion Land 2 Gameboy
63. Strider GBA
64. Bionic Commando GBA
65. Golden Axe GBA
66. Mini Final Fight GBA
67. Tetris Gameboy
68. F-1 Race Gameboy
69. Home Alone Gameboy
70. Road Rash Genesis
71. Rambo III Genesis
72. Shinobi III Genesis
73. LHX Attack Chopper Genesis
74. StarFox SNES
75. Final Fight SNES
76. Madden '94 SNES
77. Donkey Kong Country SNES
78. NCAA Basketball 2008 360
79. Vectorman Genesis
80. Vectorman 2 Genesis
81. Actraiser VC
82. Child Of Eden 360
83. The Duel Test Drive II Genesis
84. Hard Drivin' Genesis
85. Dr. Mario NES
86. Super Mario Kart SNES *new*
87. Super Mario World SNES *new*
Nothing but 150cc for me, and bring on the Star Level and Rainbow road any day. Koopa Troopa is my go to guy, and rarely disappoints.
When Super Mario World was released, I remember playing the game for days, maybe weeks before I could beat it with a 90 or above average. Two days of around playing for three hours did it this time. Star road and all that stuff too.
World was a lot, lot easier than SMB.3. Most of that is probably I remember every puzzle and hidden entrances in the game. That, and I had something like twenty-four lives just at the end of level one.
If using blue yoshi is cheating, I cheated a lot.