Penang is definitely worth a visit as it has one of the best combinations of Chinese, Indian and Western legacies in the world. If you throw in the cute UNESCO World Heritage listed Old Town of George Town and the beautiful beaches along the north of the island, you’ve got a great mini break and worth the inclusion on a South East Asian travel itinerary (see here for the full-blown 8 week itinerary – 7/8 week itinerary for the highlights of South East Asia).
On a personal level, I wish I’d given Penang’s National Park more time to explore their jungle walks as they looked cool.