Some other architectural patterns including MVC.
Layered Systems
TCP/IP
Object-Oriented Organization
Model-View-Controller, Presentation-abstraction-control, Model View Presenter and Model View ViewModel.
Examples would be ASP.NET's MVC, Ruby on Rails, and bunch of others.
Event Based, Implicit invocation
Browser environment (DOM)
Pipe and filter architecture
Unix pipes
Repositories
Table Driven Interpreters
You may also find this paper by Garlan & Shaw on Software Architecture a nice read.
Another noteworthy link would be the article on architectural patterns at Wikipedia.