The host nation typically sees a rise in their medal count, and thus far, that seems to be the case with Great Britain.
The British finished fourth overall at the 2008 Beijing Games with 19 gold medals, 13 silver and 15 bronze. In London, they have already secured 10 gold, seven silver and eight bronze.
The British have performed well in both cycling and water sports in London. Swimmer Rebecca Adlington leads the way for Great Britain in overall medals with two bronze. All but five of their medals have come on a bike or in the water.
Great Britain is now gearing up for a strong performance on the track. When you mention Great Britain in track, you must mention Jessica Ennis.
Ennis leads the heptathlon after the first day of events, and she's in good position to win the gold medal after a strong start to Day 2. Ennis kicked off the heptathlon with a world-best 12.54 in the 100-meter hurdles. With one event remaining, Ennis leads by nearly 200 points over Austra Skujyte of Lithuania.
The host nation currently sits third overall in total medals.
The British are not the only ones impressing at the 2012 Games. New Zealand has already matched their gold and bronze total from 2008, and they are only two overall medals away from their Beijing total.
All three of the New Zealand golds came in rowing competitions, and they also picked up two bronze medals there, too. The other two bronze medals came from men's team pursuit and team eventing.
With another week of action left, it would seem New Zealand is set to eclipse their 2008 totals and have a nice showing in London.
Japan is also doing quite well in London.
The Japanese finished outside of the top 10 in total medals in 2008 with nine gold, six silver and 10 bronze medals. In London, Japan is already at 21 total medals with two gold, eight silver and 11 bronze.
Kaori Matsumoto won her gold-medal Judo match against Corina Caprioriu to claim Japan's first gold of the Olympics. Japan's second gold came when Kohei Uchimura took the men's individual all-around gold in gymnastics.
Uchimura was also a part of the Japanese silver-medal gymnastics team.
And Japan is not done. They will send both of their soccer teams to the semifinals. Both will have an opportunity to medal, and the women's team is one of the gold-medal favorites.
Who else has impressed? The North Koreans certainly have.
They closed out the Beijing Games with six total medals: two gold, one silver and three bronze.
Already the North Koreans have earned themselves four gold in London.
Three gold, and their lone bronze, have all come in the weightlifting competitions. The other gold was picked up when Kum Ae An defeated Cuba's Yanet Bermoy Acosta in the women's half lightweight Judo final.
When you can double your gold medal output, you are having a successful Olympic Games.
There is still a lot of action left in London, and plenty of time for other nations to step up and make a lasting impression. Jamaica is just one that could take home a lot of medals in the final week as their track superstars seek a repeat performance of their Beijing dominance.
The Olympics is just not about the medal-count rivalry between the U.S. and China. It is also about seeing incredible performances from other athletes around the globe and the pride they give their country. We will see more shocks as the 2012 London Games continue.