Besides gaining inspiration from just listening to any piece of music you can, playing along with other musicians does the job. But, from a drum standpoint alone, try throwing in ghost notes in odd places you wouldn't normally place them. Have you ever thought about what makes Keith Carlock and Steve Jordan's playing so spicy? GHOST NOTES. Putting them where others do not. Play a straight forward, Nashville beat with little to no emotion. Then play that SAME beat, but add ONE ghost note wherever you want. Play it again and add TWO ghost notes. Play it again and add THREE ghost notes. You get the idea. Use this and branch off in any direction you want. Don't force anything, though. If it feels awkward, most scientists would confirm that, yes, it is awkward. Just relax and play what comes natural. Also, for great grooves, break away from the normal "snare on 2 and 4" idea. Put the beat wherever you want. IT IS YOUR DRUMMING, MAKE IT YOUR OWN. I DON'T KNOW WHY I AM USING A LOT OF UPPER CASED LETTERS, I DIDN'T INTEND ON DOING SO. Lol. It is just difficult to express what groove means without actually explaining it in person and on the kit. Do your own thing, though.