RMBBQ,
The link that Steven provided will give you the best overview of state and federal programs in TN that provide financial assistance to landowners. If you are primarily interested in establishing wildlife habitat, you can look into the WHIP program, which is administered by NRCS. It will provide up to 75% cost share for wildlife practices, including native grass plantings, forest openings, perennial food plots, tree/shrub plantings, etc. TWRA also has the Farm Wildlife Habitat Program, however it has a maximum of $1,000 available per landowner, and it is primarily set up for landowners that want to manage their property for small game (quail/rabbits). There are a lot of options out there for people that are interested, and it's probably best to start with a phone call or email to the NRCS Area Biologists, or TWRA private lands biologists that work out of the NRCS area offices. All of the contact information for those employees is on the TWRA website.
Good luck!