Armalyte is one of the best shooters ever created for the Commodore 64. This horizontally scrolling sci-fi shoot 'em up was developed by Cyberdyne Systems and published by Thalamus in 1988.
One on One, also known as Dr. J and Larry Bird Go One on One, is a basketball simulation developed by Eric Hammond and published by Electronic Arts initially in 1983 for the Apple II and Atari 8-bit.
Raid on Bungeling Bay is a helicopter shooter game created by Will Wright for the Commodore 64 and published by Broderbund in 1984. The game was also ported to the NES and MSX (apparently, there was also a coin-up in Japan).
Vietnam 3275 is a sci-fi shoot 'em up developed by Stavros Fasoulas for the Commodore 64. It's a modified version of another game released in 1987, called Delta MK II (or Delta Patrol).