The very first time I hear a full Coldplay album was about 2003 or 2004 at my sister house while we're having a dinner and I was impressed, yes they hit me and hit me hard with the A Rush Blood To The Head.
Few years latter I was in love with several of their songs including Talk. The time pass and I listen to the German band Kraftwerk and Computer Love and take me a time to realize that They we're taking advantage from the Coldplay song Talk (2005) and think "they are using a successful song to sale their music" DEAD WRONG!!!
What a surprise Krafwek it's a real old band in spite of their years their sound it's pretty actual, Computer Love was released in 1981 Chirs Martin was 4 years old.
In this last case I can't find the similarities as clear as the other two, I know both songs and I play twice each and can't find it... But anyway I'm glad with your picks, and pretty happy that you share with us!!!
Another very similar case is the song "Head Over Heels (In This Life)" by Switchfoot (2006) and "Dan Kamu" by D'Masiv (2009). The latter is an Indonesian band which clearly plagiarize Switchfoot's song.