I haven't touched a LEGO game in years, but LEGO Jurassic Park would probably get me on board, and it appears TT Games has teased exactly that in the credits for LEGO Batman 3: Beyond Gotham.
(Random aside, are there really three Batman-specific LEGO games already?!)
Brick Fan discovered the reference in Beyond Gotham. As Batman and Robin scale a building, a friendly T-Rex shows up and the iconic score from Steven Spielberg's film plays.
The idea of LEGO Jurassic Park isn't new, either, as the fan site Jurassic World reported on the game's existence in September. The news was ultimately pulled down at the request of NBC/Universal, giving the rumor some real weight.
If you want to see the cameo in video form, fast forward to 25 minutes: