All the best films were made in the eighties, so I couldn't pick 10. :-)
Here's the IMDb top rated films:
1. Star Wars: Episode V - The Empire Strikes Back (1980) 8.8
2. Raiders of the Lost Ark (1981) 8.7
3. Boot, Das (1981) 8.5
Shining, The (1980) 8.5
Aliens (1986) 8.5
6. Nuovo cinema Paradiso (1988) 8.4
Raging Bull (1980) 8.4
Elephant Man, The (1980) 8.4
Once Upon a Time in America (1984) 8.4
Amadeus (1984) 8.4
And here are the films with the highest USA box office:
1. E.T.: The Extra-Terrestrial (1982) $434,949,459
2. Star Wars: Episode VI - Return of the Jedi (1983) $309,125,409
3. Star Wars: Episode V - The Empire Strikes Back (1980) $290,158,751
4. Batman (1989) $251,188,924
5. Raiders of the Lost Ark (1981) $242,374,454
6. Ghost Busters (1984) $238,600,000
7. Beverly Hills Cop (1984) $234,760,500
8. Back to the Future (1985) $210,609,762
9. Indiana Jones and the Last Crusade (1989) $197,171,806
10. Indiana Jones and the Temple of Doom (1984) $179,870,271