IF you have sufficient class time, the absolute best presentations I have witnessed are ones in which the students are broken up into groups and each group assigned a topic to present. Often the students will amaze you with their creativity and the excitement in the classroom will be palpable.
I remember one student presentation in particular, concerning anorexia nervosa. The students first presented a case study (an acquaintance of one of the students, who had given her permission to relate her story in the class presentation), then pertinent high-priority nursing diagnoses. They also used props - one was a plate with actual food portions that the client would ingest daily. This was most dramatic, as the portions were incredibly small.
http://www.udel.edu/pbl/
http://academic.pgcc.edu/~wpeirce/MCCCTR/weimer.htm
http://www.abor.asu.edu/4_special_pr...efined_lce.htm
http://cte.udel.edu/bestpract.htm