On one of my first visits to Portage JCT (I visit that place about once/twice a week) I was lucky enough to catch a great traffic jam. I've seen bottlenecks since, but this one is by far the best. Let's break it down:
In the foreground, E/B CN local with CN 1435 & 7220 (GMD1u & GP9RM)
Intermodal in the middle: E/B CN 5639, 2586, 55xx (SD75I, Dash 9-44CW, SD60F)
Intermodal in the backround: W/B CN 2590, 5452, 2503 (2Dash 9-44CW's and a SD50F)
Intermodal #3 W/B (can't see it's power)
BNSF local: W/B BNSF 1685 (GP9)