Complex sentence: Jeff can be seen on NBC's Early Today program during the week, MSNBC (First Look), CNBC, and occasionally reporting for the Today Show during storms and also filling in on Today both during the week and on the "Weekend Edition".
Split into simpler sentences: Jeff can be seen on NBC's Early Today program during the week, MSNBC (First Look), CNBC, and occasionally reporting for the Today Show during storms. Jeff is also seen filling in on "Today" both during the week and on the "Weekend Edition".