That may have been what you meant, and I hope so. If by sexy you meant what is the latest fad business, then I would caution you to be very careful. These sexy concepts have a way of running their course fairly quickly and then burning out on people who have invested their life savings.
What is hot in today's market are service franchises with fairly low investments (under $100,000) that have large margins and reach breakeven quickly so they start generating a profit for the owner within a few months. Those types of opportunities are challenging to find but they do exist and they are wonderful places to invest in today's market.
The services these businesses offer are often mundane sounding and that's one of their biggest advantages. Businesses that sound hot and sexy tend to attract a ton of competition and pricing pressure very rapidly. Businesses that just quietly go about providing some necessary but non-glamorous service tend to make gobs of money without attracting much competition at all. Those are the types of franchises you should be looking for in today's marketplace!