For an excellent source of information about local museums and other cultural institutions, visit the English-language site of the Tel Aviv-Jaffa Municipality.
http://www.tel-aviv.gov.il/english/home.asp

Tel Aviv, “the city that never sleeps,” has a vibrant club, concert, theater, art and restaurant scene. The best English-language newspapers for extensive listings and information are the Jerusalem Post or the International Herald Tribune—Haaretz English Edition. Buy the Friday edition for the week’s offerings, including a TV guide. The Tel Aviv Insider website offers tips on Tel Aviv clubs, restaurants and cafes, among other types of information.
http://www.tel-aviv-insider.com/

Note that students and staff of Tel Aviv University may buy discounted tickets to a large variety of cultural offerings.
Go to the Student Union counter in the lobby of the Mitchell Student Center or call 6407662/5909 for information.