Sometimes, especially in IT training, learners may use computers as a training resource in a conventional classroom setting. The presence of a classroom tutor often tends to prevent training delivered in this way from being labeled as e-learning or blended learning.
This kind of instructor-led training can itself be conducted completely online, using email, chat or message boards. While there is a sense in which this not really "blended" (it ultimately constitutes just a single "delivery method"), the combination of human teacher and online interaction can certainly be thought of under the blended learning umbrella, especially if the online interaction is conducted using some of the more sophisticated online interactive whiteboard tools like NetMeeting.