If you've ever eaten out ANYWHERE you've experienced MSG flavoring meat. You can use it on fries, chicken, fish, steak, eggs, in sauces, rubs, in your freaking home brewed beer if you so choose. The stuff is in just about everything that doesn't say "MSG FREE!"
I typically use it whenever my family is craving 'restaurant food.' If they want some burger and fries, or some fish sandwiches, or more specifically they're asking me to go out and buy them some fast food or take out, I'll just make whatever they're craving, and add a bit of MSG into the seasonings, and voila, you've got yourself some take out, fast food, pizza joint pizzas.
Use it as you should use everything, in moderation, and you'll be a lot better off than the MSG that's loaded up in everything you ever bought from any grocery store, food chain, etc. etc.
The Life of the Knife is Ended By! The Wife.