Champaign-Urbana, like any good college town, has several coffee houses--many popular places for students to work and almost all have free Wi-Fi.
Espresso Royale is found all over campus - 1117 W. Oregon, Krannert Art Museum, at 602 E. Daniel St., and in the Undergraduate Library, as well as two other locations off campus at 1411 S. Neil Street and 2401 Village Green Place. These convenient sites offer affordable coffees, teas, muffins, scones, and lunchables. If you are meeting someone at “Espresso Royale,” be sure to designate which one.
There are several Starbuck's locations, including one at 503 E. Green St. right in the heart of campus, one inside the Illini Union Bookstore, and another inside the Illini Union.
Café Paradiso at 801 S. Lincoln in Urbana makes their coffees with espresso from Intelligentsia in Chicago. They also serve sandwiches and soups. This café is pleasantly offbeat.
In downtown Urbana, Flying Machine Coffee (which in a shared space with Pizza M and Bar M) is also a great coffee shop with good drinks and food -- many grad students like to work there.
In downtown Champaign, Café Kopi at 109 Walnut is delightful and provides truly excellent drinks and food items. A few blocks away, Aroma at 118 N. Neil also has a cozy, comfortable atmosphere with good coffee and popular food and sweets. Aroma specializes in organic shade-grown coffee from Latin America. The Walnut Street Tea Co at 115 S. Walnut St, Champaign, is known for their huge selection of teas, coffee, candies and home made goods. Further into Champaign is Biggby's on North Mattis near the Round Barn shopping center.
Newer cafes worth mentioning (thanks for Professor Micale for this update):
Two CAFFE BENE locations, one on East Green Street, the other on South Gregory
CARIBOU COFFEE, inside the County Market on Springfield, has a nice mezzanine space.
HAMMERHEAD COFFEE, inside a new highrise apartment building on University Avenue and Wright Street
BREWLAB: just opened this summer on 5th Street, half a block north of Green.
A little further afield but worth the drive:
--KALDI'S, a coffee bar, inside the new Harvest Market on Neil Street.