Top 50 Engines
 

This should be a very interesting article.

50 Amazing Aircraft Engines | Flying Magazine

Anybody care to mention their favorites (before looking at the article :))

I'm a particular fan of the PT6A-60A at present.
I feel certain that the PT-6 series will be high on the list.

F100-220/229
rb211

Well with 58 tries he named a few of the obvious ones, but I would add the Pratt & Whitney PW1000G and Wankels plus aircraft steam engines and solar powered engines. When you think about it "amazing engine" means nothing and everything. How about ion thrusters and hydrogen burners? A bunch of developmental rocket engines come to mind also. How about the space ladder? That is an engine, it does work and qualifies as "amazing". :)

J79
Saturn 5
Thomas the Tank
Google

They missed the T56 series...but covered every variant of Lycoming opposed 4 cyl GA engines...

Lycoming XR 7755. Go big or go home.

CJ610 as on the 20 series Lears, among others

Top 50 Engines
 

PT6A-67D - I swear it's bulletproof.

I assume all PT6's are awesome.

PT6A-21, PT6A-114, PT6A-140 fan here. I won't quite swear they're bullet proof, I've personally seen two catastrophic failures pretty close together(PT6A-114). That aside I'll swear by them.

How about the mighty R-4360 Wasp Major?

Pratt & Whitney R-4360-20 first start on Vimeo

Experimental versions of the Corsair and Thunderbolt had 4360s, but the war ended and jets were coming, so they never reached the production line.