The example I've always used - which seems to be the most thorough public available example - is SOA'izing MSMQ and WCF.
It's not really 'dead-basic', though. You need to have a grasp of both WCF and MSMQ before you will really understand what's going on.
Assuming you have a reasonable understanding of WCF, I'd suggest you create your own example. Essentially you create a basic WCF service, but change the binding from HTTP to MSMQ.
For a WCF intro class, do a demo of a http-based WCF service. Do you really need to demo the different bindings? Although MSMQ binding works the same, it is 'trickier' than HTTP binding.
edit: I've found another nice sample from Dennis van der Stelt called WCF and MSMQ. It covers the MSMQ specific configuration in simple steps.