Mark is a lecturer in Accounting and Finance. He's probably one of the most organised and approachable lecturers in the department, and is usually happy to talk to students. However, the units that he takes usually have a lot of content (eg. TaxationACCT3331 and Corporate Financial Policy and are fairly difficult conceptually so you have to put in a lot of work.
Bad english tends to irk him so make sure you speak / write with proper spelling and grammar..