For the record, there are way too many great songs to only pick 16 so this one's gonna be a little bigger than normal. Most of the songs are from the 60's. Unfortunately, some of the links are to live versions and re-recordings (and other things of lesser quality) because that's the best I could find.
1a) The Temptations -
1b) The Isley Brothers -
2a) Smokey Robinson & The Miracles -
2b) Jr. Walker & The All Stars
3a) The Four Tops -
3b) The Supremes -
4a) The Contours
4b) Martha & The Vandellas -
5a) Smokey Robinson -
5b) Marvin Gaye -
6a) Stevie Wonder -
6b) Mary Wells -
7a) Jackie Wilson -
7b) The Jackson 5 -
8a) The Marvelettes -
8b) Marvin Gaye & Tammi Terrell -
9a) Smokey Robinson & The Miracles -
9b) The Temptations -
10a) Gladys Knight & The Pips -
10b) The Supremes -
11a) Martha & The Vandellas -
11b) Stevie Wonder -
12a) Marvin Gaye -
12b) Jimmy Ruffin
13a) The Four Tops -
13b) The Temptations -
14a) The Supremes -
14b) The Jackson 5 -
15a) The Spinners -
15b) The Temptations -
16a) Barrett Strong
16b) Marvin Gaye & Kim Weston -