"One of the best episodes for Howard's character. It showed he actually grew up a bit while still being the Howard we know."
The episode moves Howard and Bernadette’s relationship forward significantly. It explores Howard’s fear of his mother and his ultimate realization that she supports him. [S4E23] The Engagement Reaction
Sheldon’s extreme germaphobia provides the bulk of the physical comedy. His accidental entry into a restricted room is a series highlight. "One of the best episodes for Howard's character