• The Main Library sponsors 15-minute massage sessions on the Mall from 11 a.m. to 5 p.m. today and tomorrow. The suggested cost of the professional massages, which goes to the Guatemala Acupuncture and Medical Aid Project, is $10-$20.

• Gallagher Theatre shows "Richard III" today through Friday at 7:30 p.m. and 9:35 p.m. Tickets are $2.50.

• The Center for Computing and Information Technology sponsors "Advanced HTML," a computer workshop from 4 to 6 p.m. in the Science-Engineering Library Room 311.

• The School of Music and Dance presents "Last Chance to Dance," a UA dance concert in the Gittings Dance Theatre at 7:30 p.m. Tickets are $2. Crowder Hall hosts a cello studio recital at 8 p.m.

• The ASUA Undergraduate Senate presents Student Appreciation Day from 12 to 1 p.m. on the Mall. Undergraduate students who show their IDs will receive free lunch.

• The UA Staff Advisory Council presents "On Our Own Time," the third annual UA Employee Art Exhibit continuing today through May 8 in the Student Union's Arizona Gallery.