This is the place to go to enjoy delicious custard in the Champaign-Urbana area. Personally, I find the custard to be a bit on the sweet side and think that the toppings and mix-ins are really the secret to what makes this so addictive. However, you're really not going to find anything better in this area.
The actual shop is somewhat small and can get quite busy during the summer months. While not the cheapest, prices are reasonable (and with prices of other frozen shoppes increasing, this is becoming more of a value). Parking isn't too bad and there's a generous amount of outdoor seating (which fills easily during the summer).
Overall, if you're visiting Champaign -- this is worth a visit for the flavor and the experience. It's hard to pinpoint what exactly makes their product addictive, but it's hard to resist rich, creamy custard.