Mic Geronimo - Unstoppable (1997) sampled Marvin Gaye - Poor Abbey Walsh (1972)

Artist:  Mic Geronimo
Song:  Unstoppable
Year:  1997
Album:  Vendetta

This track was produced by Pete Rock.  I thought this was a great sample from the first time I heard it.

Artist:  Kool G Rap
Song:  Foul Cats
Year:  1998
Album:  Roots Of Evil

Top 10 Emcee on the same sample but in this track the pieces are chopped up.

Artist:  Marvin Gaye
Song:  Poor Abbey Walsh
Year:  1972
Album:  Trouble Man Motion Picture Soundtrack (OST)

There are so many Marvin Gaye samples but this one is different from all the others because it was for a movie soundtrack.  The four-bar loop sampled for Mic Geronimo is at 3:35.  Kool G Rap used the same sample but rearranged the pieces.

Del The Funky Homosapien - No More Worries (1993) sampled Jerry Butler And Jerry Peters - Part III (1972)

Artist:  Del The Funky Homosapien
Song:  No More Worries
Year:  1993
Album:  No Need For Alarm

A good one-bar loop is hard to find, they can be repetitive.  Del has a good one here.  The track features A-Plus, Casual and Extra Prolific.

Artist:  Jerry Butler And Jerry Peters
Song:  Part III
Year:  1972
Album:  Melinda (Original Music From The Motion Picture) (Melinda OST)

The sample is the one-bar loop starting at 0:06.