Absolutely. Just select IL in the language dropdown on the main toolbar:
Once you've done this, if you right-click on a member, or type, in the browser and click Disassemble on the context menu, .NET Reflector will show you the IL for the selected item, including the IL offset for each instruction, just like ildasm:
At the moment there is no way to view the raw byte code for the member or type, but this is on the list of possible future enhancements.