I know exactly what you mean by getting up close... I don't know what it is, but the engine sounds better and there is something about smelling the exhaust!
I've worked the Akron Air Show as part of the Line Crew for the last 3 years as part of the line crew and that is as close as it gets! After working at an air show as part of the Line Crew, at other air shows I feel (and wish) like I should be on the other side of the fence!!
Here I am directing a Mustang out.
As you can imagine, it is even louder in front of the MiG-17! And a bit windy!