MultiPing Grapher boasts the ability to graph up to 10 different ICMP results simultaneously. Using predefined host lists, the app gives you a fast way of checking multiple connections immediately when you suspect trouble.
Comparison of the different results will give you an indication of where to look first to correct any anomolies. You can also adjust ping interval and ICMP payload (size of the data portion of the ICMP packet) to fit your needs. Use the trackbar to change the values or enter the value in the edit fields.