Helios has good coffee, free WiFi, and is one of the ONLY cafes in Raleigh that stays open late. I love the fact that they stay open until midnight (from Wednesday onwards). They also have plenty of electrical outlets for people with laptops to use. This is one of the best places in Raleigh to find other geeks/tech savvy folks. If you're struggling with a certain tech subject (CSS, PHP, programming), you're almost guaranteed to find someone here who can help. I've met some really nice people at this café, and the food is decent too.
Pros: good coffee, free wifi, great for meeting geeks
Cons: not very diverse - attracts a lot of yuppies from downtown
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