Five Things You Need to Know Today, Wednesday, November 21

1. Weather: The National Weather Service is predicting a cloudy day with a high of 50 degrees. The evening will cool down to 39 degrees.

2. The MSPCA-Agell Adoption Center in Jamaica Plain wants to see that "Nina," a 1-year-old pit bull mix whose right rear leg had to be amputated due after she was hit by a car, finds a home. Readers interested in adopting Nina have been asked to visit the MSPCA website's adoption page for details.

3. Betrayal: For seven years, Emma and Jerry engage in a passionate love affair, deceiving their spouses, each other, and at times, even themselves. Nobel Laureate Harold Pinter explores the complexities of love, guilt, and duplicity in this Olivier Award-winning classic at Boston University Theatre, showing Friday and Saturday at 8 p.m. See here for a full schedule. 

4. Mousercise: Using a Computer Mouse: Get comfortable using a computer mouse with Mousercise. The Boston Public Library is offering this free workshop today at 2 p.m.

5. Thanksgiving Information: Throughout the day, Patch will be posting Thanksgiving information like the 2012 MBTA Thanksgiving Schedule, AAA Thanksgiving Travel Info and more.