While this isn't my rack, it's one I'd like to put together for our school, 2 File servers, 2 Terminal servers, 1 exchange server, 2 app servers, twin Big IP Load balancers, 4x 48 port Gig-e 3Com layer 3 switches. (1 back up sw).
Not bad, Nice F5's... used them quite a bit myself. I also see a few [old] 2650's.. I have 10 of those for my esx sandbox
Why did you mspaint what looks like switches?