It's possible he is involved in some projects that have not been publicized or that he has worked on under a different name.
To find out more about Jeff Uhlenhake's potential involvement in film and television, you could try:
* Searching online film databases: Look for him on IMDb, The Movie Database, or other similar websites.
* Checking local film communities: If you know where he lives or works, you might find information through local film festivals or film organizations.
However, without further information, it's difficult to determine his participation in any film or television projects.