Henry IV, Parts 1 & 2.
(I assume that the person who said they were reading Chimes at midnight meant these plays?)
I love my Shakespeare, tho I find him hard to read unless I've seen the play performed first. Henry IV is by far my fave simply because it's so varied. You have both noble and gutter language - drama and comedy - the plays motifs are the nature of honor, british culture and magic - whats not to love?
Plus it has (for me) Shakespeares greatest character in Falstaff.